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NS EN ISO 389-4 : 1ED 1999

Current

Current

The latest, up-to-date edition.

ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE

Published date

12-01-2013

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Defines reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. Data given is in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies as given in ISO 389:1991 or ISO 389-2, respectively, when the masking earphone is placed on the appropriate acoustic coupler, ear simulator or artificial ear.

DocumentType
Standard
PublisherName
Norwegian Standards (Norges Standardiseringsforbund)
Status
Current

Standards Relationship
I.S. EN ISO 389-4:1999 Identical
UNI EN ISO 389-4 : 1999 Identical
ISO 389-4:1994 Identical
BS EN ISO 389-4:1999 Identical
EN ISO 389-4:1998 Identical
DIN EN ISO 389-4:1999-07 Identical
UNE-EN ISO 389-4:1999 Identical

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