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IEC 60318-8 Ed. 1.0:2022 (b)
電気音響-人の頭と耳のシミュレータ-第8部:イヤーインサートによって耳に結合された補聴器およびイヤホンの高周波測定用の音響カプラ
Electroacoustics - Simulators of human head and ear - Part 8: Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts

発行年月日: 2022-04-07
状態: 有効
邦訳版: 無

規格概要
IEC 60318-8:2022 describes an acoustic coupler for loading a hearing aid or insert earphone with a specified acoustic impedance when testing its acoustic performance, in the frequency range up to 16 kHz. It is suitable for air-conduction hearing aids and earphones, coupled to the ear by means of ear inserts, earmoulds or similar devices.
The acoustic coupler does not simulate the human ear. However, it has an effective volume of only 0,4 cm3, which is small enough not to produce significant resonances in the coupler in the frequency range below 16 kHz. Therefore, it will load the earphone with a known acoustic impedance, which allows repeatable measurements with low uncertainty to be obtained on earphones used in extended high-frequency audiometry.
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TC TC 29
ICS 17.140.50
備考
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