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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
sklademVydáno: 1994
ISO 389-4:1994-Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise

ISO 389-4:1994

ISO 389-4:1994-Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise

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Anglicky PDF
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Tisknutelné
1200 Kč
Francouzsky PDF
K okamžitému stažení
Tisknutelné
1200 Kč
Anglicky Tisk
Skladem
1200 Kč
Francouzsky Tisk
Skladem
1200 Kč
Označení normy:ISO 389-4:1994
Počet stran:4
Vydání:1
Vydáno:1994
Popis

ISO 389-4:1994


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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