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

被引：8
|
作者：
Kurakata, Kenji [1 ]
Mizunami, Tazu [1 ]
Matsushita, Kazuma [2 ]
Ashihara, Kaoru [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, AIST Cent 6,1-1-1 Higashi, Tsukuba, Ibaraki 3058566, Japan
[2] Natl Inst Technol & Evaluat, Standardizat & Technol Div, Tsukuba, Ibaraki 3050044, Japan
来源：
ACOUSTICAL SCIENCE AND TECHNOLOGY | 2005年 / 26卷 / 05期
关键词：
Hearing threshold; Individual difference; Statistical distribution; Free-field listening;
D O I：
10.1250/ast.26.440
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
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.
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页码：440 / 446
页数：7
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