DIN EN ISO 389-4:1999
Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994); German version EN ISO 389-4:1998
- Standard No.
- DIN EN ISO 389-4:1999
- Release Date
- 1999
- Published By
- German Institute for Standardization
- Status
- Replace By
- DIN EN ISO 389-4:1999-07
- Latest
- DIN EN ISO 389-4:1999-07
- Replace
- DIN EN 28798:1992
DIN EN ISO 389-4:1999 history
- 1999 DIN EN ISO 389-4:1999-07 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994); German version EN ISO 389-4:1998
- 1999 DIN EN ISO 389-4:1999 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994); German version EN ISO 389-4:1998
- 0000 DIN EN 28798:1992
