ISO 389-4:1994
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ISO 389-4:1994
22496

Status : Published (Under review)

This standard was last reviewed and confirmed in 2021. Therefore this version remains current.
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Format Language
std 1 42 PDF
std 2 42 Paper
  • CHF42
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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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General information

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

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