International Standard
ISO 389-4:1994
Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise
Reference number
ISO 389-4:1994
Edition 1
1994-10
© ISO 2024
International Standard
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Published (Edition 1, 1994)
This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 389-4:1994

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Language
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

  • Status
     : Published
    Publication date
     : 1994-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 43
    ICS :
    13.140 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

3
Good Health and Well-being

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