Reference number
ISO 389-4:1994
International Standard
ISO 389-4:1994
Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise
Edition 1
1994-10
Read sample
ISO 389-4:1994
22496
Published (Edition 1, 1994)
This publication was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 389-4:1994

ISO 389-4:1994
22496
Language
Format
CHF 42
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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.

General information

  •  : Published
     : 1994-10
    : International Standard confirmed [90.93]
  •  : 1
     : 4
  • ISO/TC 43
    13.140 
  • RSS updates

Life cycle

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This standard contributes to the following Sustainable Development Goal

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