Standard

ISO 389-4:1994

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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 fra ISO
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  • Utgave: 1
  • Versjon: 1
  • Varetype: IS
  • Products.Specs.pages
  • ICS 13.140
  • ISO TC ISO/TC 43

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