Air conduction measurement

Japanese: 気導測定 - きどうそくてい
Air conduction measurement

...This device emits pure tones at seven frequencies per octave, from 125Hz to 8000Hz, at any desired intensity, and by creating an audiogram that links the minimum audible threshold, or the hearing level that can just be heard, for each frequency, the degree of hearing loss can be diagnosed. Furthermore, by comparing two audiograms, one obtained by measuring the test sound with an air conduction receiver (a so-called earphone, and the test method using this is called air conduction measurement) and the other with a bone conduction receiver (the test method using this is called bone conduction measurement), it is possible to determine whether the hearing loss is occurring in the middle ear conductive system or the sensorineural system after the inner ear, which serves as the starting point for detailed hearing tests. In Japan, word tests use monosyllables such as "a" and "sa," which are important tests for the application of hearing aids, etc.

*Some of the terminology that refers to "air conduction measurement" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この装置は125Hzから8000Hzまで,オクターブごとに7段階の周波数の純音が,任意の強さで発振されるものであり,やっとききとれる聴力レベル,すなわち最小可聴域値をそれぞれの周波数別に結んだオーディオグラムaudiogramを作成することによって,難聴の程度を診断することができる。さらに検査音を気導受話器(いわゆるイアホンで,これによる検査法を気導測定という)と骨伝導型の受話器(これによる検査法を骨導測定という)で測定した二つのオーディオグラムを比較することにより,難聴の発生部位が中耳伝音系か内耳以後の感音系であるかを知ることができ,精密聴力検査の出発点となる。また日本では言葉による検査で〈ア〉〈サ〉などの単音節を用いるが,補聴器の適応などには重要な検査である。…

※「気導測定」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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