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Norm
ISO 389-4:1994
Ausgabedatum: 1994 09 22
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...
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Herausgeber:
International Organization for Standardization
Format:
Digital | 4 Seiten
Sprache:
Englisch
ICS
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.
ISO 389-4:1994
1994 09 22
Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels f...
Norm
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