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

Standard No.

ISO 389-2:1994

Release Date

1994

Published By

International Organization for Standardization (ISO)

Latest

ISO 389-2:1994

Scope

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.

ISO 389-2:1994 history

• 1994 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