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ID 42928
FullText URL
Thumnail 66_449.pdf 680 KB
Title Alternative
Sound localization (4)
Author
田村 節治
Abstract
This test was held in a sound-poof room, and the sources of the sound were all of pure tone. The audiometer receivers were connected to a double audiometer. The examinee had an apparent source of sound and the intensity difference and the time difference varied between both ears. The angular displacement of the apparent source was measured in contrast to the pure tone from a loud speaker connected to a beat frequency oscillator and was audible through spaces between the receivers and the ears. It was ascertained that the value of displacement was proportional to the logarithm of the ratio of intensities. (Stewsat's logarithmic law) Stewart's constant is different according to individuals. The constant does not vary with the increasing frequency. The value of the angular displacement was proportional to the difference of the lengths of two sound-ways. The relation of the angular displacement (θ) with the time difference (T) and intensity difference (I) were as follows; θ=f(1)(I)+f(2)(T) Intensity difference must be of extensively great quantity to remove the apparent source. Time difference is the most important factor in actual localization. Intensity have more influence upon localization in acoustically fatigued Person and in patients with deafness.
Published Date
1954-03-31
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume66
Issue
issue3
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
449
End Page
458
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/66/3/66_3_449/_article/-char/ja/
language
日本語
Copyright Holders
Copyright© 岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma