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NEN EN ISO 389-4 : 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

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.

DevelopmentNote
Supersedes NEN ISO 8798. (10/2002)
DocumentType
Standard
PublisherName
Netherlands Standards
Status
Current
Supersedes

Standards Relationship
I.S. EN ISO 389-4:1999 Identical
UNI EN ISO 389-4 : 1999 Identical
ISO 389-4:1994 Identical
DIN EN ISO 389-4 E : 1999 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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