BS ISO 389-3-1995 声学.听力设备校正的标准零点.第3部分:纯音和骨传导振动器用标准等效阈力级别

标准号：BS ISO 389-3-1995
中文标准名称：声学.听力设备校正的标准零点.第3部分:纯音和骨传导振动器用标准等效阈力级别
英文标准名称：Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold force levels for pure tones and bone vibrators
标准类型：M72
发布日期：1995/3/15 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M72
国际标准分类号：13.140;17.140.50
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.