UNE-EN ISO 389-2:1997
ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 2: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES. (ISO 389-2:1994).

Standard No.

UNE-EN ISO 389-2:1997

Release Date

1997

Published By

AENOR

Latest

UNE-EN ISO 389-2:1997

UNE-EN ISO 389-2:1997 history

• 1997 UNE-EN ISO 389-2:1997 ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 2: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES. (ISO 389-2:1994).