ASA S12.42-1995(R2004) American National Standard Microphone-in-Real-Ear and Acoustic Test Fixture Methods for the Measurement of Insertion Loss of Circumaural Hearing Protection Devices - Includes 1995 Erratum

standard by American National Standards of the Acoustical Society of America, 06/23/2004

Full Description

This standard is the reaffirmation of the 1995 edition.

This Standard describes the microphone-in-real-ear and the acoustic test tixture methods for the measurement of the insertion loss of circumaural earmuffs, helmets, and communication headsets.