Reference number
ISO 389-2:1994
ISO 389-2:1994
© ISO 2025
International Standard
ISO 389-2:1994
Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
Edition 1
1994-07
1994-07
ISO 389-2:1994
4378
Published
(Edition 1, 1994)
This publication was last reviewed and confirmed in 2020.
Therefore this version remains current.
Abstract
Specifies levels supplementary to those specified in ISO 389:1991 (to be re-issued as ISO 389-1). Values given are applicable to insert earphones of type Etymotic Research ER-3A, coupled to the human ear by ear inserts of type ER-3-14.
