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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
Automatically translated name:
Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 4: Reference levels for narrow-band masking noise
STANDARD published on 22.9.1994
The information about the standard:
Designation standards: ISO 389-4:1994
Publication date standards: 22.9.1994
SKU: NS-431695
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: International technical standard
Category: Technical standards ISO
The category - similar standards:
Annotation of standard text ISO 389-4:1994 :
Description / 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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