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.
DIN EN ISO 389-8-2004由德国标准化学会 DE-DIN 发布于 2004-11,并于 2004-11-01 实施。
DIN EN ISO 389-8-2004 在中国标准分类中归属于: A42 物理学与力学。
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