ISO 389-4:1994 Preview

Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 4: Reference levels for narrow-band masking noise

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

  • Current status : Published
    Publication date : 1994-09
  • Edition : 1
    Number of pages : 4
  • :
    ISO/TC 43
    Acoustics
  • 13.140
    Noise with respect to human beings

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