標準號：ISO 389-1-1998
中文標準名稱：聲學 校正聽力設備的基準零級 第1部分:純音和壓耳式耳機用的基準等效閾聲壓級
英文標準名稱：Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
標準類型：N65
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：N65
國際標準分類號：13.140
適用范圍：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.