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  • BSI
    BS EN ISO 389-3:2016 Acoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
    Edition: 2016
    $411.69
    / user per year

Description of BS EN ISO 389-3:2016 2016

This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for pure-tone bone-conduction audiometry:

  1. reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry;

  2. essential characteristics of the bone vibrator and the method of coupling to the test subject, and to the mechanical coupler;

  3. essential characteristics of the masking noise and the baseline masking noise level applied to the ear not under test.

Guidance on the practical application of this part of ISO 389 in the calibration of audiometers is given in Annex B.

RETVFL is the vibratory force level transmitted to a mechanical coupler of specified characteristics by a vibrator when applied to the mechanical coupler under stated conditions of test and when energized at the voltage level corresponding to the normal threshold of hearing for location on the mastoid prominence.

NOTE 1 Values for the differences in reference equivalent threshold vibratory force levels between location on the forehead and mastoid are included for information in Annex C.

NOTE 2 Recommended procedures for carrying out bone-conduction audiometry are specified in ISO 8253-1.



Standard NumberBS EN ISO 389-3:2016
TitleAcoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
StatusConfirmed
Publication Date2016-02-29
ReplacesBS EN ISO 389-3:1999
Identical National Standard OfISO 389-3:2016, EN ISO 389-3:2016
DescriptorsEars, Acoustoelectric devices, Acoustic equipment, Calibration, Bones, Datum, Audiometers, Auditory threshold, Audiometry, Acoustic measurement, Hearing (auditory perception)
ICS11.040.01 Medical equipment in general, 13.140 Noise with respect to human beings
CommitteeEH/1/1
ISBN978 0 580 82086 1
PublisherBSI
Pages24

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About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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