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ISO 389-4:1994

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

Standard Details

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
Standard Type: Main
Document No: ISO 389-4:1994
Document Year: 1994
Pages: 4
Edition: 1
  • ICS:
  • 13.140 Noise with respect to human beings

Life Cycle

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ISO 389-4:1994
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