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Norm
ISO 389-7:1996
Issue date: 1996 12 26
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
Specifies a reference threshold of hearing for the calibration of audiometric equipment used under definite conditions. The listeners are otologically normal persons in t...
Withdrawn: 2005 11 03
Publisher:
International Organization for Standardization
Format:
Digital | 9 Pages
Language:
English
Currently valid:
ICS
Specifies a reference threshold of hearing for the calibration of audiometric equipment used under definite conditions. The listeners are otologically normal persons in the age from 18 to 25 years inclusive. The data are given in numerical form for the preferred frequencies in the one-third-octave series from 20 Hz to 16 000 Hz in accordance with ISO 266.
ISO 389-7:2019
2019 11 05
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshol...
Norm
ISO 389-7:2005
2005 11 03
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshol...
Norm
ISO 389-7:1996
1996 12 26
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshol...
Norm
↖
Norm
Issue date :
2005 11 03
Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
