ISO 389-3-1994 声学 校正听力设备的基准零级 第3部分:骨振器纯声基准等效閾力级

标准号：ISO 389-3-1994
中文标准名称：声学 校正听力设备的基准零级 第3部分:骨振器纯声基准等效閾力级
英文标准名称：Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators
标准类型：N65;N65
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：N65;N65
国际标准分类号：13.140
适用范围：Specifies the following data applicable to the calibration of bone vibrators for pure-tone bone-conduction audiometry: reference equivalent threshold force levels (RETFL), corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry; essential characteristics of the bone vibrator and of its method of coupling to a person under test and to the mechanical coupler; essential characteristics and datum level of the masking noise applied to the ear not under test.