NF 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
Publisher
Sorry this product is not available in your region.
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 |
Indice de Classement: S30-007-4 Supersedes NF EN 28798. (02/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Association Francaise de Normalisation
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| I.S. EN ISO 389-4:1999 | Identical |
| ISO 389-4:1994 | Identical |
| UNE-EN ISO 389-4:1999 | Identical |
| BS EN ISO 389-4:1999 | Identical |
| EN ISO 389-4:1998 | Identical |
| DIN EN ISO 389-4:1999-07 | Identical |
| NEN EN ISO 389-4 : 1999 | Identical |
Summarise
Sorry this product is not available in your region.