NA 001

DIN/VDI Standards Committee Acoustics, Noise Control and Vibration Engineering


Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators - Amendment 1


This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for pure-tone bone-conduction audiometry: a) Reference equivalent threshold force levels , corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry. b) Essential characteristics of the bone vibrator and of its method of coupling to a person under test and to the mechanical coupler. c) Essential characteristics and datum level of the masking noise applied to the ear not under test.





Planned document number

DIN EN ISO 389-3/A1

Project number


Responsible national committee

DKE/GUK 821.6 - Hörgeräte, Audiometer und Kuppler 

Responsible european committee

CEN/TC 211 - Acoustics 

Responsible international committee

ISO/TC 43/WG 1 - Threshold of hearing 


Mr. Dr. rer. med.

Klaus Neuder

Stresemannallee 15
60596 Frankfurt am Main

Tel.: +49 69 6308-277
Fax: +49 69 6308-9277

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