ISO 389-2:1994

Current Revision
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones

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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

PUBLISH DATE 1994
ISO 389-2:1994

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.

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