Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones and circumaural earphones 声学.校正听力设备的基准零级.纯音和环绕耳机的基准等效阈声压级
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Acoustics - reference zero for the calibration of audiometric equipment - part 8 : reference equivalent threshold sound pressure levels for pure tones and circumaural earphones 声学.校正听力设备的基准零级.第8部分:纯音和环绕耳机的基准等效阈声压级
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Acoustics - reference zero for the calibration of audiometric equipment - part 8 : reference equivalent threshold sound pressure levels for pure tones and circumaural earphones iso 389 - 8 : 2004 ; german version en iso 389 - 8 : 2004 声学.校准听力设备的基准零级.第8部分:纯音和环绕式