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ISO 389-4:1994

Sep 1994 Current

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Abstract

Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

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Standard from ISO
Published: September 22 1994
Edition: 1
Document type: IS
Pages
ISBN:

Publisher: ISO
Distributor: ISO
ICS: 13.140
International TC: ISO/TC 43

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Adopted by: NF EN ISO 389-4:1999
Adopted by: SN EN ISO 389-4:1999
Revises: ISO 8798:1987

ISO 389-4:1994

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ISO 389-4:1994

ISO 8798:1987

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ISO 389-4:1994

ISO 8798:1987

Abstract

Products specifications

Product Relations

Product life cycle