ISO 389-3:2016 声学 听力设备校准用基准 第3部分：骨振器纯音引用基准等效阈值

标准编号：ISO 389-3:2016

中文名称：声学 听力设备校准用基准 第3部分：骨振器纯音引用基准等效阈值

英文名称：Acoustics — Reference zero for the calibration of audiometric equipment — Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators

发布日期：2016-02

标准范围

This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for puretonebone-conduction audiometry:a) reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold ofhearing of young otologically normal persons by bone-conduction audiometry;b) essential characteristics of the bone vibrator and the method of coupling to the test subject, and tothe mechanical coupler;c) essential characteristics of the masking noise and the baseline masking noise level applied to theear not under test.Guidance on the practical application of this part of ISO 389 in the calibration of audiometers isgiven in Annex B.RETVFL is the vibratory force level transmitted to a mechanical coupler of specified characteristics by avibrator when applied to the mechanical coupler under stated conditions of test and when energized at thevoltage level corresponding to the normal threshold of hearing for location on the mastoid prominence.

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