DS/ISO 8798:1991
Acoustics. Reference levels for narrow-band masking noise

Standard No.

DS/ISO 8798:1991

Release Date

1991

Published By

Danish Standards Foundation

Status

Be replaced 1999-03

Replace By

DS/EN ISO 389-4:1999

Latest

DS/EN ISO 389-4:1999

Scope

This International Standard specifies reference levels for the calibration of narrow-band masking noise presented by air con-duction 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 correspond-ing pure-tone frequencies when the masking earphone is placed on the appropriate acoustic coupler or artificial ear. Data are given for noise bandwidths of one-third and one-half octaves. Some notes on the derivation of the reference levels are given in the annex.

DS/ISO 8798:1991 history

• 1999 DS/EN ISO 389-4:1999 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise
• 1991 DS/ISO 8798:1991 Acoustics. Reference levels for narrow-band masking noise

DS/ISO 8798:1991 Acoustics. Reference levels for narrow-band masking noise was changed to DS/EN ISO 389-4:1999 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise.