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

Acoustical Science and Technology

Kazuma Matsushita²  Kaoru Ashihara¹  Kenji Kurakata¹  Tazu Mizunami¹ 

[1] National Institute of Advanced Industrial Science and Technology;National Institute of Technology and Evaluation

关键词: Hearing threshold;    Individual difference;    Statistical distribution;    Free-field listening;   

DOI  :  10.1250/ast.26.440

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(18)Cited-By(8)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.

【 授权许可】

Unknown