Updated on 2022/05/21

写真a

 
KURAKATA, Kenji
 
Affiliation
Faculty of Human Sciences, School of Human Sciences
Job title
Professor

Concurrent Post

  • Affiliated organization   Global Education Center

  • Faculty of Human Sciences   Graduate School of Human Sciences

  • Faculty of Human Sciences   School of Human Sciences (Online Degree Program)

Education

  • 1989.04
    -
    1994.03

    Osaka University   Graduate School of Human Sciences  

  • 1985.04
    -
    1989.03

    Waseda University   Faculty of Literature  

  • 1982.04
    -
    1985.03

    Waseda University Senior High School  

Degree

  • 1994.03   Osaka University   Ph. D.

Research Experience

  • 2017.04
    -
    Now

    Waseda University   Faculty of Human Sciences   Professor

  • 2016.10
    -
    2017.03

    National Institute of Advanced Industrial Science and Technology   Human Informatics Research Institute, Department of Information Technology and Human Factors   Principal Research Manager

  • 2007.10
    -
    2017.03

    Sophia University   Graduate School of Science and Technology   Guest Professor

  • 2015.04
    -
    2016.09

    National Institute of Advanced Industrial Science and Technology   Intellectual Property and Standardization Promotion Division   Councilor

  • 2014.10
    -
    2015.03

    National Institute of Advanced Industrial Science and Technology (AIST)   Research and Innovation Promotion Headquarters   Manager, Standards Planning Office

  • 2014.10
    -
    2015.03

    National Institute of Advanced Industrial Science and Technology (AIST)   Innovation Promotion Headquarters

  • 2010.04
    -
    2014.09

    National Institute of Advanced Industrial Science and Technology (AIST)   Human Technology Research Institute   Research Group Leader

  • 2007.04
    -
    2010.03

    National Institute of Advanced Industrial Science and Technology (AIST)   Institute for Human Science and Biomedical Engineering   Research Group Leader

  • 2001.04
    -
    2007.03

    National Institute of Advanced Industrial Science and Technology (AIST)   Institute for Human Science and Biomedical Engineering   Senior Researcher

  • 1998.04
    -
    2001.03

    Natl. Inst. of Bioscience and Human‐Technology, Agency of Industrial Science and Technology   Senior Researcher

  • 1996.04
    -
    1998.03

    Natl. Inst. of Bioscience and Human‐Technology, Agency of Industrial Science and Technology   Researcher

  • 1994.04
    -
    1996.03

    Research Fellowships for Young Scientists - PD, Japan Society for the Promotion of Science (JSPS)   Osaka University, NAIST

  • 1992.01
    -
    1994.03

    Research Fellowships for Young Scientists -DC1, Japan Society for the Promotion of Science (JSPS)   Osaka Univerity

▼display all

Professional Memberships

  •  
     
     

    THE JAPANESE PSYCHOLOGICAL ASSOCIATION

  •  
     
     

    日本騒音制御工学会

  •  
     
     

    日本人間工学会

  •  
     
     

    日本音響学会

  •  
     
     

    JAPAN AUDIOLOGICAL SOCIETY

 

Research Areas

  • Human interface and interaction

  • Experimental psychology

  • Otorhinolaryngology

  • Rehabilitation science

Research Interests

  • 騒音

  • 公共空間

  • ユニバーサルデザイン

  • 視覚障害者

  • 残響

  • 高齢者

  • 音案内

  • 誘導鈴

  • 音響案内

  • デザイン

  • 聴覚情報

  • 不快度

  • 音声情報

  • 音環境

  • 障害者

  • 聴覚心理学 高齢者 報知音 音質評価 騒音

  • psychology of music

  • human interfaces

  • evaluation of timbre

  • auditory signals

  • elderly people

  • psychology of hearing

▼display all

Papers

  • Loudness estimation of sounds perceived by older adults based on their equal-loudness-level characteristics

    Kurakata Kenji, Mizunami Tazu

    Acoustical Science and Technology   40 ( 4 ) 283 - 284  2019  [Refereed]

    Authorship:Lead author

    DOI

  • Accessible-Design Standards for Consumer Products Developed in ISO/TC 159/SC 4/WG 10

    Kurakata Kenji

    Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018), Vol VII: Ergonomics in Design, Design for All, Activity Theories for Work Analysis and Design, Affective Design   824   1553 - 1557  2019  [Refereed]

    Authorship:Lead author

    DOI

  • Development of an on-site system for measuring the low-frequency noise and complainant's responses

    Sato Hiroshi, Ryu Jongkwan, Kurakata Kenji

    Journal of Low Frequency Noise Vibration and Active Control   37 ( 2 ) 373 - 384  2018.06  [Refereed]

    DOI

  • Time reduction design method for cognitive assist technology

    Junji Ohyama, Nana Itoh, Kenji Kurakata, Ken Sagawa

    Human Aspects of IT for the Aged Population. Design for Aging   9193   94 - 103  2015  [Refereed]

    DOI

  • Database of sensory characteristics of older persons and persons with disabilities

    K. Kurakata, N. Itoh, J. Ohyama, H. Sato, K. Sagawa

    Gerontechnology   13 ( 2 ) 126 - 127  2014  [Refereed]

    Authorship:Lead author

     View Summary

    Purpose: It has long been common practice to design consumer products, living spaces, services, etc., with the assumption that the main users are healthy young people. However, when products are designed for older persons or persons with disabilities, the designers need to consider the sensory characteristics and abilities of these groups of users. The authors have constructed the 'Database of sensory characteristics of older persons and persons with disabilities'. Referring to the database will make it easier for designers to design products that accommodate various people who differ in their sensory characteristics and abilities&lt
    sup&gt
    1&lt
    /sup&gt
    . Method: The database displays sensory characteristics of vision, hearing, and touch measured at Advanced Industrial Science and Technology (AIST), Japan, by the authors from more than 3,000 young and older persons as well as persons with disabilities. These data for sensory characteristics have been adopted for establishing the Japanese Industrial Standards (JISs) 'Guidelines for older persons and persons with disabilities'. The database graphically presents the JIS contents described by equations and tables. Results &amp
    Discussion Japanese and English versions of the database have been released on the web free of charge to the public (Figure 3). Anyone can access and use the data as long as they comply with the terms of use. In addition to contact information, the database has a questionnaire page to gather opinions and requests from users. Data released at this time are limited to 16 items, but the authors plan further expansion, including refinement of unreleased data and addition of new items in response to feedback from users through the questionnaires.

    DOI

  • Noise evaluation based on loudness-perception characteristics of older adults

    Kurakata K, Mizunami T

    Inter-Noise 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control    2014  [Refereed]

  • Comparison of equal-loudness-level contours between otologically normal young and older adults

    Kenji Kurakata, Tazu Mizunami

    Acoustical Science and Technology   35 ( 5 ) 243 - 250  2014  [Refereed]

     View Summary

    To investigate the effects of aging on loudness perception, equal-loudness-level contours were derived from loudness estimates for pure tones with various combinations of frequency and sound pressure level. The listeners were young and older adults who had otologically normal hearing. Comparison of the contours between listener groups revealed a large difference at frequencies higher than 1,000 Hz, indicating that substantial effects of age and gender existed: older listeners were less sensitive to high-frequency tones than young listeners. In addition, older males were even less sensitive to those tones than older females. Recruitment of loudness was also observable for older listeners at high frequencies. These findings suggest that the use of frequency-weighting A, which is based on the hearing characteristics of young people, in noise evaluation is questionable when senior citizens are assumed to be the listeners. Another method that takes the effects of aging into account should be developed to estimate the loudness of sounds perceived by older listeners more accurately.

    DOI

  • How large is the individual difference in hearing sensitivity?: Establishment of ISO 28961 on the statistical distribution of hearing thresholds of otologically normal young persons

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   34 ( 1 ) 42 - 47  2013  [Refereed]

     View Summary

    ISO 28961, which describes the statistical distribution of hearing thresholds of otologically normal young persons, was established in 2012. The thresholds are those for pure tones of frontal incidence under binaural listening conditions in a free field. Percentiles of the threshold distribution are calculable as a function of frequency from 20 Hz to 16,000 Hz. This international standard is based on the study results of the present authors, who estimated the form of individual distribution using threshold data in their experiments and those in literature adopted in ISO 226 and ISO 389-7. However, because the results were published separately in four journal papers, users of the standard may encounter difficulty in understanding the process of how the threshold data have been integrated and how the threshold distribution has been determined. Therefore, the authors summarize them in this review paper and present an outline of the threshold distribution estimation so that the standard will be understood correctly and used widely. © 2013 The Acoustical Society of Japan.

    DOI

  • Sensory unpleasantness of high-frequency sounds

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   34 ( 1 ) 26 - 33  2013  [Refereed]

     View Summary

    The sensory unpleasantness of high-frequency sounds of 1 kHz and higher was investigated in psychoacoustic experiments in which young listeners with normal hearing participated. Sensory unpleasantness was defined as a perceptual impression of sounds and was differentiated from annoyance, which implies a subjective relation to the sound source. Listeners evaluated the degree of unpleasantness of high-frequency pure tones and narrow-band noise (NBN) by the magnitude estimation method. Estimates were analyzed in terms of the relationship with sharpness and loudness. Results of analyses revealed that the sensory unpleasantness of pure tones was a different auditory impression from sharpness
    the unpleasantness was more level dependent but less frequency dependent than sharpness. Furthermore, the unpleasantness increased at a higher rate than loudness did as the sound pressure level (SPL) became higher. Equal-unpleasantness-level contours, which define the combinations of SPL and frequency of tone having the same degree of unpleasantness, were drawn to display the frequency dependence of unpleasantness more clearly. Unpleasantness of NBN was weaker than that of pure tones, although those sounds were expected to have the same loudness as pure tones. These findings can serve as a basis for evaluating the sound quality of machinery noise that includes strong discrete components at high frequencies. © 2013 The Acoustical Society of Japan.

    DOI

  • 耳載せ形イヤホンと耳覆い形イヤホンで測定した純音聴覚閾値レベルの比較

    倉片憲治

    日本音響学会誌   68 ( 1 ) 3 - 10  2012.01  [Refereed]

    DOI

  • Use of autocorrelation analysis to characterize audibility of low-frequency tonal signals

    Jongkwan Ryu, Hiroshi Sato, Kenji Kurakata

    Journal of Sound and Vibration   330 ( 21 ) 5210 - 5222  2011.10  [Refereed]

     View Summary

    Autocorrelation function (ACF) parameters were used to identify low-frequency tonal sound detected in actual living environments. Five houses whose residents had made complaints for unidentified noise were selected as measurement sites. The sounds and the residents' detection responses were recorded simultaneously inside a room in each house. When they heard the suspected noise, the participants pushed a response button on a portable recording device as the sound was recorded. Results showed that tonal components in the low-frequency range were highly correlated with the sound detection. This study suggests that autocorrelation analysis can reveal the human detection of low-frequency tonal signals. Low-frequency tonal components were identified and quantified using ACF parameters: the delay time and amplitude of the ACFs first dominant peak. The amplitude was useful to describe the detection and prominence of low-frequency tonal components in noise. (C) 2011 Elsevier Ltd. All rights reserved.

    DOI

  • Guiding open house visitors using acoustic signals – An experiment at AIST Open-Lab 2010 –

    K. Kurakata, H. Sato, Y. Seki, N. Itoh, T. Mizunami, T. Sato

      12 ( 2 ) 57 - 64  2011.09  [Refereed]  [Domestic journal]

    Authorship:Lead author

    J-GLOBAL

  • Relation between annoyance and single-number quantities for rating heavy-weight floor impact sound insulation in wooden houses

    Jongkwan Ryu, Hiroshi Sato, Kenji Kurakata, Atsuo Hiramitsu, Manabu Tanaka, Tomohito Hirota

    Journal of the Acoustical Society of America   129 ( 5 ) 3047 - 3055  2011.05  [Refereed]

     View Summary

    This study investigated the relation between annoyance and single-number quantities to rate heavyweight floor impact sound insulation. Laboratory experiments were conducted to evaluate the subjective response of annoyance resulting from heavy-weight floor impact sounds recorded in wooden houses. Stimuli had two typical spectra and their modified versions, which simulate the precise change in frequency response resulting from insulation treatments. Results of the first experiment showed that the Zwicker's percentile loudness (N(5)) was the quantity to rate most well annoyance of heavy-weight impact sound over a wide sound level range. The second experiment revealed that arithmetic average (L(iFavg,Fmax)) of octave-band sound pressure levels measured using the time constant "fast" and Zwicker's percentile loudness (N(5)) much better described annoyance by the precise change in the sound spectrum attributable to insulation treatments than Japanese standardized single-number quantities (L(i,Fmax,r), L(iA,Fmax), and L(i,Fmax,Aw)) do. Japanese standardized single-number quantities using the A-weighting curve as a rating curve were found to be excessively influenced by the 63 Hz octave-band sound level and have the great sound level-dependences in the relation with subjective ratings. (C) 2011 Acoustical Society of America. [DOI:10.1121/1.3561660]

    DOI

  • Hearing thresholds for low-frequency complex tones of less than 150 Hz

    Jongkwan Ryu, Hiroshi Sato, Kenji Kurakata, Yukio Inukai

    Journal of Low Frequency Noise Vibration and Active Control   30 ( 1 ) 21 - 30  2011.03  [Refereed]

     View Summary

    Hearing thresholds for low-frequency complex tones were measured to investigate effects of intensity and frequency differences between components and effects of the number of components on the detection of complexes. Complex tones comprised two tones, geometrically centered at 60 Hz, with frequency differences of 30, 60, 90, or 120 Hz. Sound pressure levels of the two tones were set to equal intensity or to equal sensation level. Additional threshold measurements were conducted for complex tones comprising 2-6 components at 25-145 Hz. A complex signal with multiple tones was detectable even if the levels of individual components were below the threshold. The improvement of complex signal detection varied greatly with the level difference and number of tones. Threshold levels for complex tones (in terms of level per component) decreased as the number of tones increased. Complex tones whose components have mutually similar frequencies were more detectable than those with separated components.

    DOI

  • Audibility evaluation of triangle-wave tones presented against domestic sounds: Comparison with the audibility of pure tones

    Kenji Kurakata, Tazu Mizunami

    Acoustical Science and Technology   32 ( 4 ) 158 - 160  2011  [Refereed]

     View Summary

    A study was conducted to examine the effect of multiplicity of frequency components on the audibility of tone presented against interfering noise. The measurement method was essentially identical to that of an earlier study, but triangle-wave tones were used instead as an example of complex tones. The background noise and the target tones were reproduced by a personal computer. They were amplified using a power amplifier and presented to the listener through a loudspeaker in a soundproof room. The listener's chair was set at a distance of 2.5m from the loudspeaker, while the frequency characteristic of the sound reproduction system was corrected to be substantially flat at the listener's position using an equalizer. All the listeners performed pure-tone audiometry and tympanometry and completed a questionnaire concerning hearing difficulties before participating in the experiment to confirm that they had normal hearing for their age.

    DOI

  • Air conduction hearing thresholds of young and older Japanese adults for pure tones from 125 Hz to 16 kHz

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita, Kimio Shiraishi

    Acoustical Science and Technology   32 ( 1 ) 16 - 22  2011  [Refereed]

     View Summary

    This Technical Report presents air conduction hearing thresholds measured for pure tones at conventional audiometric frequencies (CAFs) from 125 Hz to 8 kHz and extended high frequencies (EHFs) from 8 kHz to 16 kHz, using apparatus and procedures in accordance with relevant ISO and IEC standards. The subjects were 490 otologically normal Japanese adults aged 18-83 years. Descriptive statistics of their threshold levels are presented in graphical and tabular forms to show the age-related decline of hearing sensitivity and its individual differences. The change in hearing sensitivity of older adults at CAFs was smaller, in general, than the standard values according to ISO 7029:2000, in which the amount of hearing sensitivity decline is estimated as a function of age. The threshold data presented in this report may serve as a basis for revising the international standard. In addition, measurement results at EHFs revealed that the responses of older subjects could be unreliable at the highest frequencies because of an unwanted sound in a lower frequency region generated with test tone presentation. Threshold values at extended high frequencies should be treated with caution. ©2011 The Acoustical Society of Japan.

    DOI

  • Unwanted sounds generated with test tone presentation can spoil extended high-frequency audiometry

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita, Kimio Shiraishi

    Journal of the Acoustical Society of America   128 ( 4 ) E157 - E162  2010.10  [Refereed]

    Authorship:Lead author

     View Summary

    Unwanted sounds from a commercially available audiometer were evaluated in terms of their effects on extended high-frequency (EHF) audiometry. Although the manufacturer reported that the audiometer conformed to relevant International Electrotechnical Commission (IEC) standards, the audiograms obtained using the audiometer were erroneous because the subjects had responded falsely to noise generated with the test tone presentation before detecting the test tone. Analyses of acoustic and electric output signals revealed that the audiometer generated most of the unwanted sounds, not the earphones that were used. Based on the measurement results, clinical implications of the measurement results are discussed for conducting more reliable EHF audiometry. (C) 2010 Acoustical Society of America

    DOI

  • Subjective ratings of heavy-weight floor impact sounds in wood frame construction

    Jongkwan Ryu, Hiroshi Sato, Kenji Kurakata, Atsuo Hiramitsu, Manabu Tanaka, Tomohito Hirota

    Acoustical Science and Technology   31 ( 5 ) 371 - 375  2010  [Refereed]

     View Summary

    The subjective ratings of heavy-weight floor impact sounds in wood frame construction were examined. Heavy-weight floor impact sounds were recorded in a mock-up building, which had four floors and two rooms each floor. The different insulation treatments were installed in the floors of each room and walls separating rooms. The stimuli consisted of 48 sounds (4 types × 2 receiver positions × 6 rooms) recorded in the mock-up building, which had 49-78 dB in the single number rating index (Lii,Fmax,r). Low pass filter with cutoff frequency 1.5 kHz was applied to remove electrical noise components in higher frequency range. The pink noise was produced from 8 loud speakers at every each 45 degree at the 1.75 m from subject and at the height of subject's ear positions. The results showed that sound insulations in higher frequency octave bands are more effective to decrease annoyance than those in lower frequency octave bands for the heavy-weight impact sound.

    DOI

  • Pure-tone air conduction thresholds of Japanese high-school students

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   31 ( 6 ) 403 - 407  2010  [Refereed]

     View Summary

    This Technical Report describes air conduction hearing thresholds measured for pure tones at conventional audiometric frequencies and extended high frequencies using apparatus and procedure in accordance with relevant ISO and IEC standards. The subjects were otologically normal Japanese high-school students aged 15-17 years. Descriptive statistics of their threshold levels are presented in graphical and tabular forms. Analyses of the measured data showed that the median threshold levels did not significantly deviate from the reference level of 0 dB and that they differed depending on the earphones used: supra-aural or circumaural earphones. These measurement results might be used effectively for revision of ISO 7029:2000, which describes the method for calculating the estimated hearing sensitivity decline as a function of age. © 2010 The Acoustical Society of Japan.

    DOI

  • Audibility of pure tones presented against domestic sounds: Comparison of ratings between young and older adults for auditory-signal design

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   31 ( 3 ) 239 - 247  2010  [Refereed]

     View Summary

    The audibility of pure tones presented against typical domestic sounds was investigated in a psychoacoustic experiment conducted with young and older listeners. The sound pressure levels of pure tones were varied at several signal-to-noise ratios to find a range of auditory signals that are audible and comfortably loud in noisy conditions. Ratings of the listeners were analyzed in terms of A- weighted sound pressure levels and 1/3 octave band levels of the target tones and background noises. The results revealed that both listener groups assigned similar ratings to various combinations of pure tones and domestic sounds. However, when the tone frequency was 2,000 Hz or higher, older listeners needed a higher tone level to attain a certain level of audibility. On the basis of the results, the authors propose sound-level ranges of auditory signals for consumer products intended for users of various ages and for users who might have age-related hearing loss. © 2010 The Acoustical Society of Japan.

    DOI

  • Auditory signals for consumer electronics: Accessible-design approach and international standardization

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Digest of Technical Papers - IEEE International Conference on Consumer Electronics     241 - 243  2009  [Refereed]

    Authorship:Lead author

     View Summary

    Auditory signals are often used in human-machine interface of consumer electronics. Those signals are expected to improve the usability and accessibility of such products. This paper reviews accessibility-related standards on auditory signals for consumer products that were established by the Japan Industrial Standards Committee and are being drafted in a Technical Committee of the International Organization for Standardization, ISO/TC 159 "Ergonomics". ©2009 IEEE.

    DOI

  • Equal-loudness-level contours of older adults measured by magnitude estimation method: A preliminary study

    Kenji Kurakata

    Acoustical Science and Technology   30 ( 6 ) 446 - 447  2009  [Refereed]

     View Summary

    A preliminary study reported the results of equal-loudness-level contours (ELLC) of older adults, which was measured by magnitude estimation (ME) method. The geometrical mean of the two numbers assigned to each stimulus was first calculated to obtain a magnitude estimate of individual listeners. ME method was produced ELLCs efficiently with precision comparable to those of other psychophysical methods, such as the method of constant stimuli and the bracketing method. The results of the study indicated that the ME method was able to yield ELLCs comparable to those in the ISO standard obtained with other measurement methods. ELLCs for numerous older adults were obtained in a short time using the ME method.

    DOI

  • Temporal patterns of auditory signals for electric consumer products: Comparison of judgments by young and older adults in four countries

    Kenji Kurakata, Tazu Mizunami, Daryle J. Gardner-Bonneau, Se Jin Park, Klaus-Peter Wegge

    Acoustical Science and Technology   30 ( 3 ) 209 - 215  2009  [Refereed]

     View Summary

    Auditory signals are often used in human-machine interfaces of electric consumer products to inform the user of the state of operation. The signals are expected to enhance the usability of products, especially for older adults who are not accustomed to using such products. Kurakata et al. [Acoust. Sci. and Tech., 29, 176-184 (2008)] reported experimental results related to temporal patterns of auditory signals for electric home appliances on which a Japanese Industrial Standard (JIS S 0013:2002) was based. However, all participants in their experiment were residents of Japan. Therefore, it remains unclear whether the information that the auditory-signal patterns convey can be understood unambiguously by people in other countries who have different cultural backgrounds and who use products that have different interface designs from those sold on the Japanese market. This paper presents results of an experiment in which American, German, and Korean listeners participated and evaluated auditory signals, employing a similar procedure to that of the study by Kurakata et al. By comparing their judgments to those by Japanese listeners, internationally acceptable temporal patterns of auditory signals are proposed. ©2009 The Acoustical Society of Japan.

    DOI

  • The statistical distribution of normal hearing thresholds for low-frequency tones

    Kenji Kurakata, Tazu Mizunami

    Journal of Low Frequency Noise Vibration and Active Control   27 ( 2 ) 97 - 104  2008  [Refereed]

    Authorship:Lead author

     View Summary

    The statistical distribution of normal hearing thresholds for pure tones in the low-frequency (LF) region was estimated as a function of frequency, using a similar procedure to that used in an earlier work by the authors Kurakata et al., [3]. First, the distribution of individual LF thresholds was investigated using threshold measurement data. Results indicated that the threshold variation among individuals can be approximated using a normal distribution. Second, under the assumption of normality, standard deviations (SDs) of hearing threshold distributions were calculated. For that calculation, the measurement data of different studies were integrated to enhance the estimation accuracy. Finally, using the obtained SDs, the threshold distribution around the average value was presented graphically. These results illustrate the profile of our auditory sensitivity at LFs more accurately and are useful for evaluating the audibility of LF noises because they incorporate individual differences.

  • Statistical distribution of normal hearing thresholds for high-frequency tones

    Kenji Kurakata, Tazu Mizunami

    Acoustical Science and Technology   29 ( 6 ) 378 - 380  2008  [Refereed]

     View Summary

    A re-examination of the hearing-threshold distribution is reported through statistical distribution method to show a more precise profile of auditory sensitivity at high frequencies. A mathematical transformation of threshold to improve the fitness of individual thresholds to a normal distribution is also proposed. Selected percentiles of threshold distribution that are estimated using the transformation are presented in a tabular and graphical form. It is found that for frequencies of 10 kHz and higher, the threshold distribution fits a normal distribution after a power-transformation of individual thresholds and is estimated more accurate. It is found that the percentile thresholds reported should be consulted for those frequencies when the hearing sensitivity of a person is examined in composition to the general population.

    DOI

  • Development and standardization of accessible design technologies that address the needs of senior citizens

    Kenji Kurakata, Ken Sagawa

    Synthesiology   1 ( 1 ) 15 - 23  2008  [Refereed]  [Invited]

     View Summary

    With the recent trend of decreased birthrate and increased aging population, design that can be used by as many people as possible including the elderly, or accessible design, has been incorporated in consumer product designs. The authors have developed and propagated accessible design technology through the establishment of Japanese Industrial Standard (JIS) based on auditory and visual functions of elderly people. This paper uses JIS S 0014, a standard for adjustment method of sound volume of auditory signals, to describe the research process that leads to the standardization of accessible design from the perspective of Full Research.

    DOI CiNii

  • Effect of ageing on hearing thresholds in the low frequency region

    Kenji Kurakata, Tazu Mizunami, Hiroshi Sato, Yukio Inukai

    Journal of Low Frequency Noise Vibration and Active Control   27 ( 3 ) 175 - 184  2008  [Refereed]

    Authorship:Lead author

     View Summary

    The hearing threshold for low frequency (LF) tones was measured in a pressure field to investigate the effects of ageing on hearing sensitivity. Participants were young adults around 20 years old and older adults over 60. Measurement results showed that the older listeners had a higher threshold, on average, than the young listeners. The difference of median thresholds between these two groups was about 10 dB at every measurement frequency. Furthermore, hearing abnormalities other than age-related hearing loss showed no great effect upon the LF thresholds. Comparison of LF thresholds and audiograms (i.e. mid and high frequency hearing) of the older listeners revealed only moderate correlation between them. These results suggest that older people retain good hearing sensitivity in the LF region, in contrast to their often-degraded sensitivity at higher frequencies. Therefore, in LF noise evaluation, we should carefully regard the possibility that older listeners can perceive a low level LF noise.

    DOI

  • The statistical distribution of normal hearing thresholds for low-frequency tones

    Kenji Kurakata, Tazu Mizunami

    Journal of Low Frequency Noise Vibration and Active Control   27 ( 2 ) 97 - 104  2008  [Refereed]

     View Summary

    The statistical distribution of normal hearing thresholds for pure tones in the low-frequency (LF) region was estimated as a function of frequency, using a similar procedure to that used in an earlier work by the authors Kurakata et al., [3]. First, the distribution of individual LF thresholds was investigated using threshold measurement data. Results indicated that the threshold variation among individuals can be approximated using a normal distribution. Second, under the assumption of normality, standard deviations (SDs) of hearing threshold distributions were calculated. For that calculation, the measurement data of different studies were integrated to enhance the estimation accuracy. Finally, using the obtained SDs, the threshold distribution around the average value was presented graphically. These results illustrate the profile of our auditory sensitivity at LFs more accurately and are useful for evaluating the audibility of LF noises because they incorporate individual differences.

    DOI

  • Guidelines on the temporal patterns of auditory signals for electric home appliances: Report of the Association for Electric Home Appliances

    Kenji Kurakata, Tazu Mizunami, Hiroshi Yomogida

    Acoustical Science and Technology   29 ( 2 ) 176 - 184  2008  [Refereed]

     View Summary

    Consumer products that are currently available on the market, such as electric home appliances, often adopt auditory signals in their user interfaces. The signals are expected to improve the usability of such appliances for all users, including elderly people and visually impaired people. The Association for Electric Home Appliances (AEHA) established guidelines for auditory signals in 1999, which recommended temporal patterns of auditory signals for electric home appliances. The AEHA Guidelines were adopted later as a Japanese Industrial Standard (JIS S 0013:2002) without any major changes, but embracing a wider range of consumer products. For users, it is desirable that the specifications related to auditory signals in the standard be accepted widely internationally and that they be applied to every product. In this Technical Report, we translate and summarize the AEHA Report written in Japanese, on which the AEHA Guidelines and the JIS are based, in the hope that the JIS will become the foundation of an international standard on the auditory signals of consumer products. © 2008 The Acoustical Society of Japan.

    DOI

  • Hearing threshold for pure tones above 20 kHz

    Kaoru Ashihara, Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   27 ( 1 ) 12 - 19  2006  [Refereed]

     View Summary

    Hearing thresholds for pure tones from 2 kHz to 28 kHz were measured. A 2AFC procedure combined with a 3-down 1-up transformed up-down method was employed to obtain threshold values that were less affected by listener's criterion of judgment. From some listeners, threshold values of 88 dB SPL or higher were obtained for a tone at 24 kHz, whereas thresholds could not be obtained from all participants at 26 kHz and above. Furthermore, thresholds were also measured under masking by a noise low-pass filtered at 20 kHz. At frequencies above 20 kHz, the difference of threshold values between with and without the masking noise was a few decibels, indicating that the tone detection was not affected by subharmonic components that might have appeared in the lower frequency regions. The results of measurement also showed that the threshold increased rather gradually for tones from 20 to 24 kHz whereas it increased sharply from 14 to 20 kHz.

    DOI

  • Pure-tone audiometric thresholds of young and older adults

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   27 ( 2 ) 114 - 116  2006  [Refereed]

     View Summary

    Hearing sensitivity of otologically normal persons declines with their age. The pure-tone audiometric threshold of hearing of different age group of people is described. ISO 7029 reveals hearing sensitivity declines as a deviation from the threshold of 18-year-people. The average threshold value agreed well in this studies for young people of 20 years old and old people of 60 years old. In the physchoacoustic experiment the monaural air-condition threshold was measured with a pure-tone audiometer in a sound proof room excluding certain audiological abnormalities. The study confirms that people in recent years have a different auditory profile with better hearing ability at higher frequencies and the it is prominent particularly in case of males.

    DOI

  • Reexamination of the age-related sensitivity decrease in ISO 7029: Do the Japanese have better hearing sensitivity?

    Kenji Kurakata, Tazu Mizunami

    Acoustical Science and Technology   26 ( 4 ) 381 - 383  2005.07  [Refereed]

     View Summary

    The ISO threshold values of different ages were reviewed. The ISO threshold values were compared with Japanese data published after the Robinson and Sutton survey. The results indicated that the Japanese people showed, on average, a smaller age-related decrease in hearing sensitivity than people did more than 30 years ago. The higher thresholds in the ISO standard seem to be influenced by noise-induced hearing loss, possibly because of noise exposure in the workplace.

    DOI

  • Percentiles of normal hearing-threshold distribution under free-field listening conditions in numerical form

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita

    Acoustical Science and Technology   26 ( 5 ) 447 - 449  2005  [Refereed]

     View Summary

    The use of representative percentiles of normal hearing-threshold distribution in a tabular form are discussed. The researchers calculate the standard deviation (SD) of hearing thresholds as a function of frequency from 25Hz to 18Hz. Using the SDs and normative threshold values of the ISO standard, the normal threshold distribution profile could determine the entire range of audible frequencies. Thus it can be concluded that a table of representative values of threshold distributions can be more convenient to use than the mean and SD values.

    DOI

  • Statistical distribution of normal hearing thresholds under free-field listening conditions

    Kenji Kurakata, Tazu Mizunami, Kazuma Matsushita, Kaoru Ashihara

    Acoustical Science and Technology   26 ( 5 ) 440 - 446  2005  [Refereed]

     View Summary

    The statistical distribution of normal hearing thresholds for pure tones of frontal incidence under binaural, free-field listening conditions was estimated as a function of frequency. First, the form of threshold distribution was investigated with threshold measurement data of the present study and those of other studies. Analytical results indicate that the threshold distribution has a form of normal distribution for the frequency range from 25 Hz to 16 kHz. Second, under the assumption of normality, standard deviations of thresholds were calculated for the frequency range from 25 Hz to 18 kHz by combining available threshold data of different studies. A supplementary experiment showed that thresholds at frequencies above 16 kHz were measurable with high reliability. These results illustrate the profile of our auditory sensitivity more accurately because they account for individual differences.

    DOI

  • JIS S 0013における報知音(終了音・注意音)の推奨ON/OFFパターンの追検討

    倉片憲治

    人間工学   40 ( 5 ) 264 - 271  2004  [Refereed]

    DOI

  • Threshold of hearing in free field for high-frequency tones from 1 to 20 kHz

    Kenji Kurakata, Kaoru Ashihara, Kazuma Matsushita, Hideki Tamai, Yoshiyuki Ihara

    Acoustical Science and Technology   24 ( 6 ) 398 - 399  2003.11  [Refereed]

     View Summary

    Binaural hearing thresholds in free field were measured for pure tones to obtain threshold values in the high-frequency region. Measurement was conducted in an anechoic room of 4.35m (W) × 6.00m (D) × 2.95 m (H). Sound level deviations from the reference point met the sound field requirements of the preferred test conditions and more than ±1 dB were observed at 1 and 4kHz. The result illustrated the high-frequency region threshold curve.

    DOI

  • 音情報の理解過程を考慮した分かりやすいサイン音の設計試論

    水浪田鶴, 倉片憲治

    サウンドスケープ   5   23 - 26  2003  [Refereed]  [Invited]

  • Database of domestic sounds for evaluation of auditory-signal audibility: JIS/TR S 0001

    Kenji Kurakata, Kazuma Matsushita, Yasuo Kuchinomachi

    Acoustical Science and Technology   24 ( 1 ) 23 - 26  2003.01  [Refereed]

     View Summary

    A new Technical Report of Japanese Industrial Standard, JIS/TR S 0001, was made public in January 2002. This JIS/TR is a database for determining the acoustic properties of auditory signals used in consumer products
    it consists of (1) graphical data of the frequency characteristics of domestic sounds, and (2) a library of recorded sounds on compact disc. The former can be used to graphically determine combinations of frequency and sound pressure level of auditory signals that are audible against domestic sounds. The latter is intended for use in a psychoacoustic experiment in which auditory signals are presented along with domestic sound(s) of the library
    listeners are asked then to judge how they perceive the signals. The experiment can be carried out using either a loudspeaker or headphones. This JIS/TR will facilitate the development of suitable auditory signals for domestic appliances used under various noisy conditions and by a variety of users, including the elderly.

    DOI

  • ゴルフ打球音の測定 -メタルヘッドへの移行にともなう打球音の変化-

    倉片憲治

    騒音制御   26 ( 1 ) 60 - 63  2002  [Refereed]

    DOI

  • 家電製品の報知音の計測・第3報 −発音パターンの分析−

    倉片憲治

    日本人間工学会誌   36 ( 3 ) 147 - 153  2000  [Refereed]

    DOI

  • 高齢者の聴力レベルとテレビの聴取音量の関係

    倉片憲治

    日本人間工学会誌 (1999)、35(3)、169-176   35 ( 3 ) 169 - 176  1999  [Refereed]

    DOI

  • 家電製品の報知音の計測 −高齢者の聴覚特性に基づく検討・第2報ー

    倉片憲治

    日本人間工学会誌   35 ( 4 ) 277 - 285  1999  [Refereed]

    DOI

  • Perception of two crossing frequency glides

    Michinao Matsui, Kenji Kurakata, Atsushi Nishimura

    Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)   19 ( 4 ) 293 - 296  1998  [Refereed]

     View Summary

    An experiment was conducted to study the interaction of the extrapolation mechanism with the effect of frequency proximity. The stimuli consisted of two sinusoidal glides with logarithmically changing frequency. Results show that when two gliding tones cross each other, they can create a crossing percept, as well as the bouncing percept. This effect could be observed when the glide durations were as short as 100 ms. The frequency changes of the glides were traced when they did not change in opposite directions, and a crossing perception could be elicited.

    DOI

  • 家電製品の報知音の計測 −高齢者の聴覚特性に基づく検討ー

    日本人間工学会誌   34 ( 4 ) 215 - 222  1998  [Refereed]

    DOI

  • Journal of the Acoustical Society of Japan (E)

    K. Kurakata

    Journal of the Acoustical Society of Japan (E)   17 ( 6 ) 327 - 329  1996.12  [Refereed]

  • Evaluation of broad-band noise mixed with amplitude-modulated sounds.

    Kuwano Sonoko, Namba Seiichiro, Kurakata Kenji, Kikuchi Yoshimasa

    Acoustical Science and Technology   15 ( 3 ) 131 - 142  1994  [Refereed]

     View Summary

    A series of experiments was conducted concerning the effect of amplitude-modulated (AM) sounds on the impression of broad-band noise. The following results were found:(1) AM sounds in broad-band noise were detected when S/N was around zero (S: the level of AM sound, N: 1/3 octave band level of broad-band noise with center frequency corresponding to the carrier frequency of AM sounds). Close examination showed that carrier frequency, modulation frequency and modulation depth had a systematic effect on the detection of AM sounds.(2) The loudness of broad-band noise mixed with AM sounds could be approximately evaluated by loudness level based on ISO 532B (LLz).(3) The timbre of broad-band noise mixed with AM sounds was judged to be more metallic as the carrier frequency of AM sounds became higher and to be more clamorous as the carrier frequency became lower. This suggests that the timbre is deteriorated when AM sounds are mixed with broad-band noise. The three factors were extracted by the factor analysis: they were "metallic" or "unpleasant, " "powerful" and "rough."

    DOI CiNii

  • Factors determining the impression of the equality of intensity in piano performance.

    Kurakata Kenji, Kuwano Sonoko, Namba Seiichiro

    Acoustical Science and Technology   14 ( 6 ) 441 - 447  1993  [Refereed]

    Authorship:Lead author

     View Summary

    Performances of two skilled amateur pianists were analyzed to investigate factors deter mining the impression of the equality of intensity in piano music. The results of the analysis showed that although the pianists tried to play every tone as equally as possible, not all the tones were played in equal intensity. The following two features were found in the performances:(1) The pattern of fluctuation was regularly repeated throughout the performance.(2) The peak level of each "playing unit" was remarkably kept constant compared with the fluctuation of each tone. The same tendency was also found in the performances of professional pianists. The results of the psychoacoustical experiment showed that when these features were destroyed, the impression of equality was degraded. These findings suggest that skilled pianists can maintain the impression of the equality of intensity by making good use of the characteristics of our auditory perception.

    DOI CiNii

  • Loudness and timbre of broad-band noise mixed with frequency-modulated sounds

    Seiichiro Namba, Sonoko Kuwano, Kanjiro Kinoshita, Kenji Kurakata

    Journal of the Acoustical Society of Japan (E)   13 ( 1 ) 49 - 58  1992.01  [Refereed]

  • Program for calculating loudness according to DIN 45631 (ISO 532B)

    Eberhard Zwicker, Hugo Fastl, Ulrich Widmann, Kenji Kurakata, Sonoko Kuwano, Seiichiro Namba

    Journal of the Acoustical Society of Japan (E)   12 ( 1 ) 39 - 42  1991.01  [Refereed]

▼display all

Books and Other Publications

▼display all

Misc

  • An introductory overview of the schemes of standardization on acoustics and the role of ASJ: International standards of ISO and IEC, and JIS as national standards of Japan.

    鈴木陽一, 佐藤洋, 堀内竜三, 今泉博之, 倉片憲治, 赤松友成, 高橋幸雄

    日本音響学会誌   77 ( 2 )  2021

    J-GLOBAL

  • Review of the Measurement Method of Low-Frequency Sounds-Technology Trends and Low-Frequency Noise Problems in Recent Years

    倉片憲治, 井上保雄, 大屋正晴, 落合博明, 高橋幸雄, 町田信夫

    騒音制御   45 ( 1 )  2021

    J-GLOBAL

  • Hearing Threshold for Low-Frequency Complex Tones

    倉片憲治

    騒音制御   45 ( 1 )  2021

    J-GLOBAL

  • Gender Differences in Acoustic Features of Voices Affecting Speech Intelligibility-Analyses of the ATR Japanese Speech Database-

    小林まおり, 倉片憲治

    情報処理学会研究報告(Web)   2021 ( SLP-138 )  2021

    J-GLOBAL

  • エコーロケーション 音の方向知覚とその加齢変化

    倉片憲治

    心理学ワールド   ( 89 )  2020  [Invited]

    Article, review, commentary, editorial, etc. (scientific journal)  

    J-GLOBAL

  • Auditory signals for consumer products-International standardization and what follows

    倉片憲治

    日本音響学会研究発表会講演論文集(CD-ROM)   2020  2020

    J-GLOBAL

  • Benefits of Extended High-Frequency Audiometry and Problems Associated with the Measurement

    Kenji Kurakata

    Proceedings of the auditory research meeting   49 ( 8 ) 615 - 620  2019.12

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

    CiNii

  • Waseda University Faculty of Human Sciences

    Waseda Journal of Human Sciences   31 ( 2 ) 154 - 155  2018.09  [Invited]

    Authorship:Lead author

    Article, review, commentary, editorial, etc. (other)  

    CiNii

  • AIST Database on Human Sensory Abilities for Older People and People with Disabilities

    伊藤納奈, 佐川賢, 倉片憲治

    人間工学   54 ( 2 ) 49‐55 - 55  2018.04

    CiNii J-GLOBAL

  • Standards development in working groups of ISO/TC 43 "Acoustics"

    Kurakata Kenji, Tateno Makoto, Unoki Masashi, Kimizuka Ikuo, Kuwano Sonoko, Suzuki Yôiti, Fujisaka Yoh-ichi

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN   74 ( 1 ) 22 - 28  2018

    Authorship:Lead author

    Article, review, commentary, editorial, etc. (scientific journal)  

    DOI CiNii J-GLOBAL

  • TC43本体のWG1,WG8,WG9での規格審議について

    倉片憲治, 鈴木陽一

    日本音響学会研究発表会講演論文集(CD-ROM)   2016   ROMBUNNO.1‐10‐8  2016.08

    J-GLOBAL

  • ISO/TC 43, ISO/TC 43/SC 1 and ISO/TC 43/SC 2 plenary meetings : Progress report of international standardization on acoustics : 2015 Milan meetings

    山田 一郎, 吉村 純一, 倉片 憲治, 佐藤 洋, 井上 仁郎, 君塚 郁夫, 古賀 貴士, 白橋 良宏, 平光 厚雄

    日本音響学会誌   72 ( 5 ) 280 - 284  2016.05

    Meeting report  

    CiNii

  • Draft Methods for Measuring and Evaluating Noise with Low-Frequency Components : Working Group Report

    倉片 憲治

    Proceedings of the spring meeting, the Institute of Noise Control Engineering of Japan   2015   1 - 4  2015.04

    Authorship:Lead author

    CiNii J-GLOBAL

  • ISO/TC 43, ISO/TC 43/SC 1 and ISO/TC 43/SC 2 plenary meetings : Progress report of international standardization on acoustics : 2014 Berlin meetings

    Tachibana Hideki, Yamada Ichiro, Yoshimura Junichi, Kurakata Kenji, Sato Hiroshi, Inoue Jinro, Kimizuka Ikuo, Kuwano Sonoko, Shirahashi Yoshihiro

    The Journal of the Acoustical Society of Japan   70 ( 10 ) 567 - 571  2014.10

    CiNii

  • 産総研「高齢者・障害者の感覚特性データベース」―人間生活工学の新しいデザインツール―

    倉片憲治, 伊藤納奈, 大山潤爾, 佐藤洋, 佐川賢

    人間生活工学   15 ( 2 ) 55 - 57  2014.09

    CiNii J-GLOBAL

  • 等ラウドネスレベル特性の加齢変化と騒音評価

    倉片憲治, 水浪田鶴

    日本音響学会研究発表会講演論文集(CD-ROM)   2014   ROMBUNNO.3-5-7 - 1028  2014.08

    CiNii J-GLOBAL

  • Special Issues No.2 : Ergonomics Standardization in ISO and its Latest Trend (6):-Accessible-Design Standards and Contribution from Japan-

    KURAKATA Kenji, SAGAWA Ken

    The Japanese Journal of Ergonomics   50 ( 6 ) 319 - 325  2014

    Authorship:Lead author

    Article, review, commentary, editorial, etc. (scientific journal)  

    DOI CiNii J-GLOBAL

  • Database of sensory characteristics of older persons and persons with disabilities : For accessible design of products, services, and environments

    倉片憲治

    Journal of Information Processing and Management   57 ( 8 ) 539 - 547  2014  [Invited]

    Authorship:Lead author

    Article, review, commentary, editorial, etc. (scientific journal)  

     View Summary

    As older people among the population increase rapidly and social awareness of human rights of people with disabilities continues to improve, needs have strengthened for products, services, and environments that are "accessible" for all people irrespective of their age or disability. To meet those needs, products must be re-designed so that they match user characteristics and abilities. This article introduces a "Database of sensory characteristics of older persons and persons with disabilities", constructed by the National Institute of Advanced Industrial Science and Technology (AIST) for product design. The database is freely available to the public on the Internet. This database also provides tools for using a series of Japanese Industrial Standards, "Guidelines for older persons and persons with disabilities". Since its establishment in August 2013, the database has been used by engineers and designers of manufacturers who are interested in developing accessibly designed products, services, and environments.

    DOI CiNii J-GLOBAL

  • 高齢者・障害者の感覚特性データベース 年齢や障害の有無などに応じてグラフィカルに表示

    倉片憲治

    産総研TODAY(Web)   14 ( 1 ) 14 (WEB ONLY)  2014.01

    Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

    J-GLOBAL

  • 高齢者の音の聞こえと快音設計

    倉片憲治

    騒音制御   37 ( 5 ) 255 - 258  2013.10

    CiNii J-GLOBAL

  • 聴覚の“個人差”に根差した騒音の評価と対策

    倉片憲治, 水浪田鶴

    日本音響学会研究発表会講演論文集(CD-ROM)   2013   ROMBUNNO.2-5-11  2013.09

    J-GLOBAL

  • 高周波音を含む鉄道騒音―その計測と評価の問題―

    廣江正明, 倉片憲治, 桑野園子, 樋田昌良

    日本音響学会研究発表会講演論文集(CD-ROM)   2013   ROMBUNNO.2-5-10  2013.09

    J-GLOBAL

  • Meetings of ISO/TC 43(Acoustics) : Progress report of International Standardization on Acoustics

    TACHIBANA Hideki, SUZUKI Yoiti, YAMADA Ichiro, YOSHIMURA Junichi, OKUBO Tomonao, KURAKATA Kenji, SHIRAHASHI Yoshihiro, AKAMATSU Tomonari

    The Journal of the Acoustical Society of Japan   69 ( 6 ) 304 - 308  2013.06

    CiNii

  • 家電製品の報知音に対する聴取印象の国際比較実験及び国際標準化動向

    水浪田鶴, 倉片憲治

    日本音響学会研究発表会講演論文集(CD-ROM)   2013   ROMBUNNO.3-3-8  2013.03

    J-GLOBAL

  • Estimation of legible font size for elderly people:— Accessible design of characters in signs and displays and its standardization —

    SAGAWA Ken, KURAKATA Kenji

    Synthesiology English edition   6 ( 1 ) 38 - 49  2013

    Article, review, commentary, editorial, etc. (scientific journal)  

     View Summary

    Concept, methodology, and dissemination of outcomes for accessible design research are described in this paper, using vision research as an example. Characteristics of accessible design whose standpoint is different from that of assistive technology are explained in terms of methods for problem solving, objects of design, and public usefulness, and the role of standardization is emphasized from the point of public usefulness. As an example, the process of vision research for estimating minimum legible font size for elderly people is described. To develop a general estimation method for minimum legible font size, we collected fundamental data on visual acuity which changes with age and visual distance. Then, we compiled data on legibility of letters used in actual Japanese, derived a general estimating equation of legible font size, and confirmed the practical utility of the method. We have developed this method as a domestic and international standard. In addition, we have also applied this method to international comparative testing and have confirmed the validity of the results of this research. Finally, the entire process has been clarified by separating it into two procedural cycles: one for basic research and the other for application, and the concept of "<i>Full Research</i>" has been addressed in the process.

    CiNii

  • 2E3-1 Posture and the reach range of the upper limb for the elderly and physically disabled persons

    YOKOI Takashi, KURAKATA Kenji, HOSIKAWA Yasuyuki, ISHIMOTO Akio

    The Japanese Journal of Ergonomics   49 ( 0 ) S406 - S407  2013

    CiNii

  • Estimation of legible font size for elderly people ― Accessible design of characters in signs and displays and its standardization ―

    佐川賢, 倉片憲治

    Synthesiology   6 ( 1 ) 34-44 (J-STAGE) - 44  2013

    Article, review, commentary, editorial, etc. (scientific journal)  

     View Summary

    Concept, methodology, and dissemination of outcomes for accessible design research are described in this paper, using vision research as an example. Characteristics of accessible design whose standpoint is different from that of assistive technology are explained in terms of methods for problem solving, objects of design, and public usefulness, and the role of standardization is emphasized from the point of public usefulness. As an example, the process of vision research for estimating minimum legible font size for elderly people is described. To develop a general estimation method for minimum legible font size, we collected fundamental data on visual acuity which changes with age and visual distance. Then, we compiled data on legibility of letters used in actual Japanese, derived a general estimating equation of legible font size, and confirmed the practical utility of the method. We have developed this method as a domestic and international standard. In addition, we have also applied this method to international comparative testing and have confirmed the validity of the results of this research. Finally, the entire process has been clarified by separating it into two procedural cycles: one for basic research, and the other for application, and the concept of "<i>Full Research</i>" has been addressed in the process.

    DOI CiNii J-GLOBAL

  • 高齢者の聞こえを考慮した安全・安心・快適な音環境とは

    水浪田鶴, 倉片憲治

    人間工学   48 ( 0 ) 52 - 53  2012.06

    Research paper, summary (national, other academic conference)  

    DOI CiNii J-GLOBAL

  • 聴力の個人差分布を国際標準として公表 個人差を考慮した的確な騒音評価が可能に

    倉片憲治

    産総研TODAY(Web)   12 ( 6 ) 26 (WEB ONLY)  2012.06

    Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

    J-GLOBAL

  • 低周波音による健康影響 III.低周波音に対する知覚心理特性

    倉片憲治

    ビルと環境   ( 137 ) 10 - 12  2012.06

    J-GLOBAL

  • 日本の報知音が世界標準に 誰にでもわかりやすい報知音の幅広い普及に期待

    倉片憲治

    産総研TODAY(Web)   12 ( 2 ) 20 (WEB ONLY)  2012.02

    Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

    J-GLOBAL

  • 音のデザイン:感性に訴える音が豊かな社会を生み出す―サイン音のユニバーサル・デザイン―標準化の動向を中心に―

    倉片憲治, 関喜一, 佐藤洋

    日本音響学会誌   68 ( 1 ) 49 - 54  2011.12

    Article, review, commentary, editorial, etc. (scientific journal)  

    DOI J-GLOBAL

  • ISO/TC159における人間工学アクセシビリティ規格

    倉片憲治

    人間工学   47 ( 0 ) 16 - 17  2011.06

    DOI CiNii J-GLOBAL

  • アクセシブルデザインと国際標準化

    佐川賢, 倉片憲治, 横井孝志

    横幹   5 ( 1 ) 24 - 29  2011.04

    Article, review, commentary, editorial, etc. (scientific journal)  

     View Summary

    "Accessible design" is an emerging design method of products, services and environments.It takes into account special requirements of older persons and persons with disabilities inthe design process and, thereby, maximizes the number of their potential users. In the design process,ergonomic knowledge and human-ability/characteristic data of those target users play a crucialrole. This paper reviews the development of accessible-design methods in a variety of fields such asuser-interface design of consumer products and shows how ergonomic knowledge and data can beused effectively. It also focuses on relevant activities of international standardization in TechnicalCommittee 159 "Ergonomics" of International Organization for Standardization.

    DOI CiNii J-GLOBAL

  • 音はつけたくないけど,つけるとしたら

    倉片憲治

    日本騒音制御工学会研究発表会講演論文集   2010   11 - 14  2010.09

    J-GLOBAL

  • 高周波音の発生状況に関する実態調査

    倉片憲治, 廣江正明, 緒方正剛, 佐藤利和, 瀧浪弘章

    日本騒音制御工学会研究発表会講演論文集   2010   253 - 256  2010.09

    CiNii J-GLOBAL

  • サイン音のデザインに求められる次の設計の観点とは?

    水浪田鶴, 倉片憲治

    人間工学   46 ( 0 ) 114 - 115  2010.06

    Research paper, summary (national, other academic conference)  

    DOI CiNii J-GLOBAL

  • 高い周波数領域における聴力の個人差

    倉片憲治, 水浪田鶴

    日本騒音制御工学会研究発表会講演論文集   2010   67 - 68  2010.04

    J-GLOBAL

  • Accessible Design of Voice Guides for Consumer Products and Office Equipment

    MIZUNAMI Tazu, KURAKATA Kenji

    The Japanese Journal of Ergonomics   45 ( 6 ) 323 - 328  2009.12

    DOI CiNii J-GLOBAL

  • 感覚機能とアクセシブルデザイン

    倉片憲治

    人間工学   45 ( 0 ) 76 - 77  2009.06

    Research paper, summary (national, other academic conference)  

    DOI CiNii J-GLOBAL

  • 若齢者と高齢者の方向定位能力の比較と誘導鈴

    佐藤洋, 関喜一, 倉片憲治, 松下一馬

    感覚代行シンポジウム   35th   69 - 72  2009

    J-GLOBAL

  • Barrier-free issues in hearing science

    Kurakata Kenji, Tachiiri Hajime, Sakamoto Shinichi

    The Journal of the Acoustical Society of Japan   65 ( 3 ) 137 - 141  2009

    Article, review, commentary, editorial, etc. (scientific journal)  

    DOI CiNii J-GLOBAL

  • ―音響技術における標準―音響技術における心理的な量に関する標準

    倉片憲治, 佐藤洋, 鈴木陽一

    日本音響学会誌   64 ( 2 ) 93 - 97  2008.02

    DOI J-GLOBAL

  • Standards to address the needs of older persons and persons with disabilities

    Kurakata Kenji, Sagawa Ken

    The Japanese Journal of Ergonomics   44 ( 0 ) 22 - 23  2008

    DOI CiNii J-GLOBAL

  • Round-table talk: After writing a new type of research paper

    石井 順太郎, 岸本 充生, 倉片 憲治

    Synthesiology   1 ( 1 ) 66 - 73  2008.01

    CiNii

  • 公共空間における音案内の音源定位特性

    関喜一, 佐藤洋, 倉片憲治, 松下一馬

    感覚代行シンポジウム   34th   89 - 92  2008

    J-GLOBAL

  • 低周波騒音と苦情者感覚特性の現場同時計測・評価法の開発に関する研究

    佐藤洋, 倉片憲治, 蘆原郁, 堀内竜三

    環境保全研究成果集(CD-ROM)   2008   ROMBUNNO.30  2008

    J-GLOBAL

  • 低周波騒音の苦情現場計測と苦情反応との対応計測

    佐藤洋, 犬飼幸男, RYU JongKwan, 倉片憲治

    日本騒音制御工学会研究発表会講演論文集   2007   177 - 180  2007.09

    J-GLOBAL

  • 長時間測定における低周波音の苦情成分特定に関する事例研究

    犬飼幸男, 佐藤洋, RYU Jongkwan, 倉片憲治

    日本騒音制御工学会研究発表会講演論文集   2007   181 - 184  2007.09

    J-GLOBAL

  • Standardization and technology development related to "sound barrier-free" in hearing research field

    倉片 憲治, 坂本 真一

    聴覚研究会資料   37 ( 5 ) 353 - 358  2007.06

    CiNii

  • ISO/TC43・ISO/TC43/SC1・ISO/TC43/SC2総会―音響に関する国際規格の審議状況:2006 Madrid会議―

    橘秀樹, 板本守正, 鈴木陽一, 山田一郎, 吉村純一, 倉片憲治, 佐藤洋, 金井俊一郎, 田中学, 瀧浪弘章, 君塚郁夫

    騒音制御   31 ( 2 ) 150 - 153  2007.04

    J-GLOBAL

  • 低周波騒音と苦情者感覚特性の現場同時計測・評価法の開発に関する研究

    佐藤洋, 倉片憲治, 蘆原郁, 堀内竜三

    環境保全研究成果集(CD-ROM)   2007   ROMBUNNO.39  2007

    J-GLOBAL

  • Existing technologies and issues surrounding barrier-free acoustic environments

    Ueha Sadayuki, Arai Takayuki, Kurisu Kiyohiro, Kurakata Kenji, Sakamoto Shinichi, Nakamura(Funaba) Hisao, Sato Hiroshi

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN   63 ( 12 ) 723 - 730  2007

    DOI CiNii J-GLOBAL

  • 音環境Q&A 100選

    安藤啓, 伊積康彦, 稲留康一, 井上勝夫, 井上保雄, 犬飼幸男, 上野佳奈子, 内田匡哉, 漆戸幸雄, 江川明也, 岡本健久, 緒方三郎, 落合博明, 大森文彦, 大脇雅直, 工藤忠良, 倉片憲治, 古賀貴士, 後藤剛史, 坂本慎一, 佐藤洋, 佐藤史明, 田中学, 冨田隆太, 豊田恵美, 中澤真司, 西川嘉雄, 羽入敏樹, 平松友孝, 藤沢康仁, 藤橋克己, 町田信夫, 峯村敦雄, 宮尾健一, 宮島徹, 村石喜一, 森卓支, 山内崇, 山本耕三, 横山栄

    音響技術   35 ( 4 ) 2 - 92  2006.12

    J-GLOBAL

  • 若齢者・高齢者を対象とした高周波領域の純音聴力測定

    水浪田鶴, 倉片憲治, 松下一馬

    日本音響学会研究発表会講演論文集(CD-ROM)   2006   2-5-4  2006.09

    J-GLOBAL

  • Features and problems of “Reference values for complaints of mental and physical discomfort about low frequency noise” compared with criteria of low frequency noise in other countries.

    犬飼幸男, 多屋秀人, 佐藤洋, 蘆原郁, 倉片憲治

    日本機械学会環境工学総合シンポジウム講演論文集   16th   101 - 106  2006.07

    J-GLOBAL

  • 低周波騒音と苦情者感覚特性の現場同時計測・評価法の開発に関する研究

    佐藤洋, 倉片憲治, 蘆原郁, 堀内竜三

    環境保全研究成果集(CD-ROM)   2006   ROMBUNNO.41  2006

    J-GLOBAL

  • ISO/TC43・ISO/TC43/SC1・ISO/TC43/SC2総会 音響に関する国際規格の審議状況 2005 Mississauga会議

    橘秀樹, 板本守正, 鈴木陽一, 山田一郎, 吉村純一, 桑野園子, 倉片憲治, 佐藤洋, 白橋良宏, 田中学, 君塚郁夫

    騒音制御   29 ( 6 ) 486 - 490  2005.12

    J-GLOBAL

  • Preferred listening level for speech in noisy environment : Comparison between young and elderly listeners

    水浪 田鶴, 倉片 憲治, 佐藤 洋

    聴覚研究会資料 = Proceedings of the auditory research meeting   35 ( 10 ) 617 - 622  2005.11

    CiNii

  • Hearing Ability of Older Persons and Environmental Noise Problems

    KURAKATA Kenji

    騒音制御 = JOURNAL OF INCE/J   29 ( 1 ) 20 - 23  2005.02

    DOI CiNii J-GLOBAL

  • Design methods of auditory signals utilizing human cognitive factors:Conveying information accurately and intelligibly

    Mizunami Tazu, Kurakata Kenji

    Proceedings of the Annual Meeting of Japan Ergonomics Society   41 ( 0 ) 196 - 197  2005

    CiNii

  • 高齢者の聴覚特性と音の設計--HQLデータベースを活用して (特集 生活をより楽しくする音の技術)

    倉片 憲治

    人間生活工学   5 ( 4 ) 20 - 23  2004.10

    CiNii

  • The evaluation of low frequency noise in older adults and its prediction

    INUKAI Yukio, TAYA Hideto, KURAKATA Kenji, SAGAWA Ken

    日本騒音制御工学会技術発表会講演論文集   2004   317 - 320  2004.09

    CiNii J-GLOBAL

  • 聴覚のメカニズムと快・不快の感じ方

    倉片憲治

    日本機械学会年次大会講演論文集   2004 ( Vol.8 ) 352 - 353  2004.09

    J-GLOBAL

  • 聴覚の加齢変化を考慮した消費生活製品の設計

    倉片憲治

    日本音響学会研究発表会講演論文集   2004   491 - 494  2004.03

    J-GLOBAL

  • Minimum auditory field for high-frequency pure tones obtained from high-school students

    蘆原 郁, 倉片 憲治, 水浪 田鶴

    聴覚研究会資料 = Proceedings of the auditory research meeting   33 ( 8 ) 537 - 541  2003.10

    CiNii

  • Standardization of Measurement Methods of Audio Performances for Personal Computers

    倉片 憲治, 松下 一馬

    聴覚研究会資料 = Proceedings of the auditory research meeting   33 ( 8 ) 543 - 545  2003.10

    CiNii

  • 報知音(注意音・終了音)の時間パターンの比較聴取実験―JIS S 0013における推奨パターンの再検討―

    水浪田鶴, 下迫晴加, 松下一馬, 倉片憲治

    日本音響学会研究発表会講演論文集   2003   457 - 458  2003.09

    J-GLOBAL

  • 音の認知特性を考慮した分かりやすいサイン音の設計

    水浪田鶴, 下迫晴加, 倉片憲治

    日本心理学会大会発表論文集   67th   651  2003.08

    J-GLOBAL

  • Hearing threshold for pure tones above 20 kHz

    蘆原 郁, 倉片 憲治, 水浪 田鶴

    聴覚研究会資料 = Proceedings of the auditory research meeting   33 ( 5 ) 335 - 340  2003.07

    CiNii

  • 高齢者心理学 2 高齢者の聴覚の心理物理学的研究

    倉片憲治

    心理学ワールド   ( 21 ) 24 - 26  2003.04

    J-GLOBAL

  • Auditory Information Processing

    KURAKATA Kenji

    Journal of the Society of Instrument and Control Engineers   41 ( 10 ) 708 - 711  2002.10

    Article, review, commentary, editorial, etc. (scientific journal)  

    DOI CiNii J-GLOBAL

  • 生活環境音中に呈示された純音信号の聞き取りやすさ評価―若年者と高齢者の比較―

    倉片憲治, 水浪田鶴, 松下一馬

    日本音響学会研究発表会講演論文集   2002   459 - 460  2002.09

    J-GLOBAL

  • Universal design of auditory signals : Standardization of the auditory signals of domestic appliances

    Kurakata Kenji

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN   58 ( 6 ) 360 - 365  2002.06

    DOI CiNii J-GLOBAL

  • Sound measurement with a sound level meter based on the auditory characteristics of the elderly

    Kurakata Kenji

    SICE Division Conference Program and Abstracts   2002 ( 0 ) 571 - 571  2002

    Authorship:Lead author

     View Summary

    The sound level meters in current use employ frequency-weighting networks for A-weighting characteristics. However, A-weighted sound pressure levels show large deviations from the loudness perceived by elderly persons because the weighting function was determined based on the frequency sensitivity of young people. This paper introduces a method of developing a sound level meter for the elderly to properly evaluate their perceived loudness.

    CiNii

  • Toward Establishment of a New Japanese Industrial Standard on Auditory Signals.

    倉片憲治

    振動・音響新技術シンポジウム講演論文集   2001   35 - 38  2001.06

    J-GLOBAL

  • Auditory Signals of Electric Home Appliances - How Can They Be Audible and Identifiable for Everyone ?-

    KURAKATA Kenji

    騒音制御   25 ( 1 ) 13 - 16  2001.02

    DOI CiNii J-GLOBAL

  • Toward Standardization of Auditory Signals

    KURAKATA Kenji

    The Journal of the INCE of Japan   25 ( 1 ) 24 - 25  2001.02

    DOI CiNii J-GLOBAL

  • Auditory Signals of Electric Home Appliances

    Kurakata Kenji

    The Journal of the INCE of Japan   25 ( 1 ) 13 - 16  2001

    CiNii

  • 高齢者の聴覚特性から見た生活環境

    倉片憲治

    人間-生活環境系シンポジウム報告集   24th   9 - 12  2000.11

    J-GLOBAL

  • 加齢化に伴う明瞭度了解度への刺激音レベルの影響

    大内孝子, 子安勝, 大川平一郎, 桑野園子, 安岡正人, 倉片憲治

    日本音響学会研究発表会講演論文集   2000   687 - 688  2000.03

    J-GLOBAL

  • Living Environments Evaluated in Terms of the Hearing Ability of the Elderly(Symposium I)

    KURAKATA Kenji

    人間-生活環境系シンポジウム報告集   24   9 - 12  2000

    CiNii

  • 高齢者の側からみた共生のための条件に関する研究 1 動作・行動特性からみた共生条件に関する研究 1.4 動作・行動特性からみた共生条件 (科学技術庁研究開発局S)

    小木元, 横井孝志, 氏家弘裕, 倉片憲治

    高齢社会における製品・生活環境等のユニバーサル化に関する研究成果報告書 平成9-11年度     170 - 189  2000

    J-GLOBAL

  • 高齢社会における共生特性に関する研究 1 家庭・公共施設における共生特性に関する研究 1.1 居住空間における共生特性 (科学技術庁研究開発局S)

    小木元, 横井孝志, 氏家弘裕, 倉片憲治

    高齢社会における製品・生活環境等のユニバーサル化に関する研究成果報告書 平成9-11年度     21 - 38  2000

    J-GLOBAL

  • Study on a Universal Design Methodology for Products in a Rapidly Aging Society

    OGI Hajime, YOKOI Takashi, UJIKE Hiroyasu, KURAKATA Kenji

    Special issue of Japanese Society for the Science of Design   7 ( 1 ) 10 - 15  1999.09

    DOI CiNii J-GLOBAL

  • Loudness Functions of Older People for Pure Tones and Low‐Pass Filtered Noises.

    倉片憲治, 木塚朝博, 久場康良, 口ノ町康夫

    日本音響学会研究発表会講演論文集   1999   403 - 404  1999.09

    J-GLOBAL

  • Visual Search Characteristics of Elderly Person

    KUBA Yasuyoshi, KIZUKA Tomohiro, KURAKATA Kenji, KUCHINOMACHI Yasuo

    人間工学   35   154 - 155  1999.05

    CiNii

  • Database of domestic sounds for evaluating audio signals

    KURAKATA Kenji, MATSUSHITA Kazuma, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    人間工学   35   330 - 331  1999.05

    CiNii

  • Visual Search Characteristics of Elderly Person

    KUBA Yasuyoshi, KIZUKA Tomohiro, KURAKATA Kenji, KUCHINOMACHI Yasuo

    人間工学   35   154 - 155  1999.05

    DOI CiNii J-GLOBAL

  • Database of domestic sounds for evaluating audio signals

    KURAKATA Kenji, MATSUSHITA Kazuma, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    人間工学   35   330 - 331  1999.05

    DOI CiNii J-GLOBAL

  • 家電製品の報知音に関する現状調査--高齢者の聴覚機能変化に基づく検討

    倉片 憲治, 久場 康良, 口ノ町 康夫

    標準化ジャ-ナル   29 ( 3 ) 15 - 17  1999.03

    CiNii

  • Database of domestic sounds for evaluating audio signals

    KURAKATA Kenji, MATSUSHITA Kazuma, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    The Japanese Journal of Ergonomics   35 ( 1 ) 90 - 90  1999

    CiNii

  • Audio signals in electric home appliances evaluated in terms of the hearing ability of older adults. (Second report).

    KURAKATA Kenji, MATSUSHITA Kazuma, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    The Japanese Journal of Ergonomics   35 ( 4 ) 277 - 285  1999

     View Summary

    As a supplement to the previous report (Kurakata et al., The Japanese Journal of Ergonomics, Vol. 34, No. 4, 1998), the audio signals used in electric home appliances were investigated to identify suitable signals for the hearing ability of older adults. First, the audio signals in appliances made by eight manufacturers in Japan were recorded. Then their frequencies and sound pressure levels were analyzed. Next, based on the hearing levels of young adults and the elderly, thresholds of hearing were estimated as a function of frequency to show frequency-intensity regions audible for different age groups. The results of the measurements confirmed the conclusion of the previous report that many of the audio signals could not be heard by the elderly and lower-frequency tones should be used as signals. These results might well serve as basic data to design audio signals suitable for both young adults and senior citizens.

    CiNii

  • Visual Search Characteristics of Elderly Person

    Kuba Yasuyoshi, Kizuka Tomohiro, Kurakata Kenji, Kuchinomachi Yasuo

    The Japanese Journal of Ergonomics   35 ( 1 ) 44a - 44a  1999

    CiNii

  • Database of domestic sounds for evaluating audio signals.

    KURAKATA Kenji, MATSUSHITA Kazuma, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    The Japanese Journal of Ergonomics   35   330 - 331  1999

    CiNii

  • Visual Search Characteristics of Elderly Person.

    Kuba Yasuyoshi, Kizuka Tomohiro, Kurakata Kenji, Kuchinomachi Yasuo

    The Japanese Journal of Ergonomics   35   154 - 155  1999

    CiNii

  • Relationship between the decrease of sensory and cognitive functions in the old people and the usability of the electric daily appliances.

    口ノ町康夫, 武市啓司郎, 熊田孝恒, 久場康良, 倉片憲治

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集   1998 ( Pt.1 ) 2BIII4.5(1)-2BIII4.5(2)  1998.06

    J-GLOBAL

  • Visual Search Characteristics of Elderly Person.

    久場康良, 木塚朝博, 倉片憲治, 口ノ町康夫

    人間工学   34 ( Supplement ) 508 - 509  1998.05

    DOI CiNii J-GLOBAL

  • Relationship of hearing levels of older adults to preferred volume of television sounds.

    倉片憲治, 久場康良, 口ノ町康夫

    人間工学   34 ( Supplement ) 222 - 223  1998.05

    DOI CiNii J-GLOBAL

  • Human - friendly interfaces for old people

    KUCHINOMACHI Yasuo, KURAKATA Kenji, KUBA Yasuyoshi, KUMADA Takatsune

    IPSJ SIG Notes   1998 ( 12 ) 39 - 44  1998.02

     View Summary

    Many electric appliances which are convienient in daily lives are not easy for old people to use, so old people often won't use such electric appliances. As a familiar example, the sound signal of the daily electric appliances was not fit for old people. And then, the relationship between the usability of daily electric appliances and the deterioration in sensory and cognitive function of old people was analyzed. It was found that the usability had a high correlation not only with the visual function but also with the cognitive function such as thinking, memory, and attention etc.. Furthermore, there was also high correlation between the usability and the frequency of use of electric appliances.

    CiNii J-GLOBAL

  • Perception of two crossing frequency glides

    Michinao Matsui, Kenji Kurakata, Atsushi Nishimura

    Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)   19 ( 4 ) 293 - 296  1998

     View Summary

    An experiment was conducted to study the interaction of the extrapolation mechanism with the effect of frequency proximity. The stimuli consisted of two sinusoidal glides with logarithmically changing frequency. Results show that when two gliding tones cross each other, they can create a crossing percept, as well as the bouncing percept. This effect could be observed when the glide durations were as short as 100 ms. The frequency changes of the glides were traced when they did not change in opposite directions, and a crossing perception could be elicited.

    DOI CiNii

  • Audio signals in electric home appliances evaluated in terms of the hearing ability of older adults.

    KURAKATA Kenji, KUBA Yasuyoshi, KUCHINOMACHI Yasuo, MATSUSHITA Kazuma

    The Japanese Journal of Ergonomics   34 ( 4 ) 215 - 222  1998

     View Summary

    The audio signals used in electric home appliances currently available on the market were recorded to identify suitable signals for the hearing ability of older adults. The results of the analysis indicated the following three problems: (1) Some appliances use high-frequency tones around 4000Hz. Since these sounds are hard for older adults with presbycusis to hear, it would be better to use signals with lower frequencies. However, the problem here is that if the frequency is lowered, then the signal might be masked by domestic sounds whose power would be greater relative to the low-frequency signals. (2) The signals used by some appliances are too soft. The intensity of some signals should be adjusted to compensate for the hearing loss among older adults. (3) The sounds used in these appliances are often very similar in terms of both timbre and temporal ringing patterns. This may cause confusion because it is difficult to identify which appliance is signaling.

    CiNii

  • Visual Search Characteristics of Elderly Person.

    Kuba Yasuyoshi, Kizuka Tomohiro, Kurakata Kenji, Kuchinomachi Yasuo

    The Japanese Journal of Ergonomics   34 ( 0 ) 508 - 509  1998

    CiNii

  • A study on alarm sounds of household electric appliances and living environment noises considering the auditory characteristics of older adults.

    KURAKATA Kenji, KUBA Yasuyoshi, KUCHINOMACHI Yasuo, MATSUSITA Kazuma

    日本音響学会研究発表会講演論文集   1997 ( 2 ) 719 - 720  1997.09

    CiNii J-GLOBAL

  • Visual Search Characteristics of Elderly Person

    KUBA Yasuyoshi, KUMADA Takatsune, KURAKATA Kenji, KUCHINOMACHI Yasuo

    The Japanese Journal of Ergonomics   38 ( Supplement ) 142 - 143  1997.05

    DOI CiNii J-GLOBAL

  • Alarm Sounds of Household Electric Appliances : Considerations Based on Hearing Properties of Older Adults

    KURAKATA Kenji, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    日本人間工学会大会講演集   38 ( Supplement ) 478 - 479  1997.05

    DOI CiNii J-GLOBAL

  • Alarm Sounds of Household Electric Applicances. Considerations Based on Hearing Properties of Older Adults.:Considerations Based on Hearing Properties of Older Adults

    KURAKATA Kenji, KUBA Yasuyoshi, KUCHINOMACHI Yasuo

    The Japanese Journal of Ergonomics   33 ( 0 ) 478 - 479  1997

    CiNii

  • Research on the voice recognition algorithm by the synthesis of microphone array and probability model. ( Ministry of Education S ).

    鹿野清宏, 中村哲, 伊勢史郎, 倉片憲治, 杉山雅英, 伊達玄

    音声・言語・概念の統合的処理による対話の理解と生成に関する研究 平成5-7年度     141 - 150  1997

    J-GLOBAL

  • Effects of intensity and frequency on the perception of the time interval of tone burst sequence

    KURAKATA Kenji

    Journal of the Acoustical Society of Japan ?   17 ( 6 ) 327 - 329  1996.11

    CiNii

  • Aiming a friendly multi-media interface for elderly person.

    久場康良, 口ノ町康夫, 藤本浩志, 倉片憲治

    日本産業技術振興協会技術資料   ( 263 ) 66 - 71  1996.10

    J-GLOBAL

  • Some Constraints on a Cognitive Model of Auditory Scene Analysis.

    MATSUI Michinao, KURAKATA Kenji, NISHIMURA Atsusi

    日本音響学会研究発表会講演論文集   1996 ( 1 ) 485 - 486  1996.03

    CiNii J-GLOBAL

  • Effects of intensity and frequency on the perception of the time interval of tone burst sequence

    Kenji Kurakata

    Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)   17 ( 6 ) 327 - 329  1996

     View Summary

    The effects of the intensity and frequency of markers on the perceived time interval are investigated. In this studies, sequences of tone burst are used, instead of the single time intervals which are common in previous studies of time perceptions. Based on the results, there seems to be no consistent interaction with the frequency of tone bursts.

    DOI

  • 聴覚研究者の立場から : 音を扱うから音響学?

    倉片 憲治

    日本音響学会誌   52 ( 11 )  1996

    CiNii

  • Psychological Evidence of the Prediction Process in Continuity Effect

    KURAKATA Kenji, MATSUI Michinao, NISHIMURA Atsushi

    日本音響学会研究発表会講演論文集   1995 ( 2 ) 441 - 442  1995.09

    CiNii J-GLOBAL

  • A Psychological Model of Auditory Processing with Prediction Process

    MATSUI Michinao, KURAKATA Kenji, NISHIMURA Atsushi

    日本音響学会研究発表会講演論文集   1995 ( 2 ) 443 - 444  1995.09

    CiNii J-GLOBAL

  • Perceptual Trajectory of the Continuity Effect of Frequency Glide. (Second Report).

    倉片憲治, 松井理直, 西村篤

    電子情報通信学会技術研究報告   95 ( 141(SP95 42-48) ) 9 - 16  1995.07

     View Summary

    The continuity effect was investigated using a noise preceded and followed by a frequency glide to confirm the results of our previous study (Kurakata et al.,1994). The perceptual trajectory of the glide during the noise was obtained by drawing method, in which subjects were asked to express by drawing a line what they heard. The drawings showed that they did not simply interpolate the two frequencies of the glide at the beginning and the end of the noise, but seemed to perceive more complicated continuity One of the factors which elicited this complexity of the continuity may be an psychological process which traces the frequency change of glide and predicts its subsequent trajectory. In order to examine this hypothesis, psychoacoustic experiments were conducted in which subjects were asked to compare the duration of one glide with that of another followed by a noise. The results indicated that the glide with the noise was overestimated as the hypothesis suggested.

    CiNii J-GLOBAL

  • Psychological Processes of Prediction and Constraints in Auditory Scene Analysis

    MATSUI Michinao, KURAKATA Kenji, NISHIMURA Atsushi

    IEICE technical report. Speech   95 ( 141 ) 17 - 24  1995.07

     View Summary

    Auditory world consists of various sounds which are mixed each other, and the complexity forces our auditory system to solve "inverse problems" with infinite solutions. This problem is called "Auditory Scene Analysis". The difficulties exist in designing such perceptual processes, therefore we can't explicitly enumerate every way of solution. To clear the difficulty, we select the approaches which are based on self-generation and constraints. From this point of view, we propose a model of Auditory Scene Analysis in this paper.

    CiNii J-GLOBAL

  • Psychological Process of the Continuity Effect for Predicting Frequency Glide

    KURAKATA Kenji, MATSUI Michinao, NISHIMURA Atsushi

    日本音響学会研究発表会講演論文集   1995 ( 1 ) 477 - 478  1995.03

    CiNii J-GLOBAL

  • Effects of level fluctuation on the estimation of piano performance.

    倉片憲治, 桑野園子, 難波精一郎

    日本音響学会研究発表会講演論文集   1993 ( Autumn Pt 1 ) 573 - 574  1993.10

    J-GLOBAL

  • Effects of the irregularity of level fluctuation on the sensation of fluctuation strength.

    倉片憲治

    日本音響学会研究発表会講演論文集   1993 ( Autumn Pt 1 ) 429 - 430  1993.10

    J-GLOBAL

  • Factors Determining the Impression of “Smoothness” in Piano Performance.

    倉片憲治, 桑野園子, 難波精一郎

    日本音響学会研究発表会講演論文集   1992 ( Autumn Pt 1 ) 597 - 598  1992.10

    J-GLOBAL

  • Evaluation of timbre of air‐conditioner noise.

    菊池芳正, 木下歓治郎, 難波精一郎, 桑野園子, 倉片憲治

    日本機械学会環境工学総合シンポジウム講演論文集   2nd   19 - 20  1992.07

    J-GLOBAL

  • Effects of Intensity and Frequency on Judging the Interval of Tone Burst Sequence.

    倉片憲治

    日本音響学会研究発表会講演論文集   1992 ( Spring Pt 1 ) 375 - 376  1992.03

    J-GLOBAL

  • The Threshold for Detecting Frequency‐modulated Sounds in Broad‐band Noise.

    倉片憲治, 難波精一郎, 桑野園子, 宮岡徹, 木下歓治郎

    日本音響学会研究発表会講演論文集   1991 ( Autumn Pt 2 ) 679 - 680  1991.10

    J-GLOBAL

  • Relation between physical intensity and subjective duration in auditory perception.

    倉片憲治

    日本音響学会研究発表会講演論文集   1991 ( Spring Pt 1 ) 365 - 366  1991.03

    J-GLOBAL

  • The effects of FM components on the evaluation of air‐conditioner noise.

    桑野園子, 難波精一郎, 木下歓治郎, 倉片憲治

    日本音響学会研究発表会講演論文集   1991 ( Spring Pt 2 ) 497 - 498  1991.03

    J-GLOBAL

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Industrial Property Rights

  • 聴覚障害を考慮した音の測定方法およびシステム

    特許第3448586号

    倉片 憲治, 口ノ町康夫

    Patent

Works

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Other

  • 日本語教育能力検定試験,合格

  • 色彩検定,UC級

  • 心理学検定,特1級

  • 環境計量士(騒音・振動関係)(第2176号)

  • 騒音関係公害防止管理者(第45895号)

Awards

  • Prize for distinguished achievements or books in noise control (2016)

    2016.05   INCE/J  

    Winner: FUNABA Hisao, OTA Atsushi, KURAKATA Kenji, TAKEDA Masaki

  • 平成20年度工業標準化事業表彰 産業技術環境局長表彰

    2008.10   経済産業省   (貢献者表彰)

    Winner: 倉片 憲治

  • Sato Prize

    2007.03   The Acoustical Society of Japan  

    Winner: K. Ashihara, K. Kurakata, T. Mizunami, and K. Matsushita,

  • Awaya Award

    1996.03   The Acoustical Society of Japan  

    Winner: KURAKATA Kenji

Research Projects

  • 拡張高周波聴力検査法の改良によるイヤホン難聴の早期発見とリスク要因の同定

    日本学術振興会  科研費

    Project Year :

    2018.04
    -
    2023.03
     

    倉片 憲治

  • アクセシブルデザイン(AD)製品及びその認証に関する国際標準化・普及基盤構築

    経済産業省  工業標準化推進事業委託費

    Project Year :

    2014.06
    -
    2017.03
     

    倉片 憲治

  • アクセシブルデザイン(AD)に関するJIS開発

    経済産業省  高機能JIS等整備事業 「安全・安心な社会形成に資するJIS開発」

    Project Year :

    2014.05
    -
    2017.02
     

    倉片 憲治

  • 加齢変化を考慮した騒音評価方法の開発に向けた聴覚モデルの構築

    日本学術振興会  科研費

    Project Year :

    2012.04
    -
    2015.03
     

    倉片 憲治

  • アクセシブルデザイン及びその適合性評価に関する国際標準化

    経済産業省  工業標準化推進事業委託費

    Project Year :

    2012.07
    -
    2014.03
     

    倉片 憲治

  • アクセシブルデザイン(AD)の体系的技術に関する標準化

    経済産業省  工業標準化推進事業委託費

    Project Year :

    2009.07
    -
    2012.03
     

    倉片 憲治

  • Psychology of hearing

    Ordinary Research

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Specific Research

  • 高齢者の感覚・身体特性データ及び製品等の改善ニーズの体系的収集

    2017  

     View Summary

    The aim of this study was to collect literature data on various human abilities for young and older adults. The human abilities here included sensory (e.g., seeing, hearing, and touching), physical (both static and dynamic characteristics), and cognitive ones (e.g., memory, attention, and reaction time). After being sorted and organized properly, the collected data will be used effectively by designers when they design products, services, and environments that are suitable for all people including senior citizens. Part of the study will continue another five years, supported by a Grant-in-Aid for Scientific Research, JSPS.

 

Syllabus

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Teaching Experience

  • 障がいの理解と支援

    早稲田大学グローバルエデュケーションセンター  

  • 加齢人間工学

    早稲田大学 人間科学学術院  

  • 人間特性の計測と応用

    東京大学 文学部  

  • 福祉情報学

    上智大学大学院 理工学研究科  

 

Committee Memberships

  • 2021.08
    -
    Now

    ISO/TC 314/WG 5, Home care  Convenor

  • 2020.06
    -
    Now

    日本音響学会音響規格委員会 ISO/TC43専門委員会  委員長

  • 2019.01
    -
    Now

    ISO/TC 173/SC 7, Assistive products for persons with impaired sensory functions  Chair

  • 2015.06
    -
    Now

    日本音響学会  評議員・元理事

  • 2014.06
    -
    Now

    日本騒音制御工学会  元評議員

  • 2012.10
    -
    Now

    基本(量及び単位)分野JIS原案作成委員会  委員

  • 2012.10
    -
    Now

    ISO/TC 12 国内委員会  委員

  • 2010.10
    -
    Now

    総務省 公害等調整委員会  専門委員

  • 2010.06
    -
    Now

    日本工業標準調査会 高齢者・障害者支援専門委員会  臨時委員

  • 2004.04
    -
    Now

    ISO/TC159国内対策委員会  委員

  • 2004.03
    -
    Now

    ISO/TC 159/WG 2, Ergonomics for people with special requirements  Secretary

  • 2010.10
    -
    2021.10

    ISO/TC 159/SC 4/WG 10, Accessible design for consumer products  Convenor

  • 2016.06
    -
    2020.05

    日本騒音制御工学会 低周波音分科会  主査

  • 2013.01
    -
    2018.11

    ISO/TC 43/WG 1, Threshold of hearing  Convenor

  • 2006.10
    -
    2015.10

    ISO/TC 159/SC 5/WG 5, Physical environments for people with special requirements  Convenor

  • 2011.06
    -
    2015.05

    日本音響学会  理事

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