Menu

0

ISO 389-4:1994

Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise

Publication date:   Sep 22, 1994

General information

90.93 Standard confirmed   Jan 29, 2021

ISO

ISO/TC 43 Acoustics

International Standard

13.140   Noise with respect to human beings

Buying

  Published

PDF - €50.82

  French   English  



Buy

Scope

Specifies reference levels for narrow-band masking noise presented by air conduction 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 corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 8798:1987

NOW

PUBLISHED
ISO 389-4:1994
90.93 Standard confirmed
Jan 29, 2021