ISO 389-1-1998 声学 校正听力设备的基准零级 第1部分:纯音和压耳式耳机用的基准等效阈声压级

标准号：ISO 389-1-1998
中文标准名称：声学 校正听力设备的基准零级 第1部分:纯音和压耳式耳机用的基准等效阈声压级
英文标准名称：Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
标准类型：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
国际标准分类号：13.140
适用范围：This part of ISO 389 specifies a standard reference zero for the scale of hearing threshold level applicable to pure-tone air conduction audiometers, in order to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world.It states the information in a form suitable for direct application to the calibration of audiometers, that is, in terms of the response of two different standard models of earphone measured on a coupler complying with EC 60303 and in terms of other supra-aural earphones of models specified in 4.3 measured on an artificial ear complying with IEC 60318.It is based on an assessment of the information available from the various standardizing laboratories responsible for audiometric standards and from scientific publications.Some notes on the derivation and application of the recommended reference levels are given in annex A.