DIN EN ISO 389-8-2004 声学.校准听力设备的基准零级.第8部分:纯音和环绕式耳机的基准等效阈声压级

标准号：DIN EN ISO 389-8-2004
中文标准名称：声学.校准听力设备的基准零级.第8部分:纯音和环绕式耳机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 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones (ISO 389-8:2004); German version EN ISO 389-8:2004
标准类型：A42
发布日期：1999/12/31 12:00:00
实施日期：2004/11/1 12:00:00
中国标准分类号：A42
适用范围：This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPLs) for pure tonesin the frequency range from 125 Hz to 8 kHz, applicable to the calibration of air conduction audiometersequipped with a particular model of circumaural earphones (SENNHEISER HDA 200).The sound attenuation of the earphone is given in Annex B. For speech audiometers of types A-E and B-E(see IEC 60645-2), the correction figures of the earphone for a free-field equivalent output are given inAnnex C.