Sound Absorption Coefficient

The practical unit between 0 and 1 expressing the absorbing efficiency of a material. It is determined experimentally.

Reference

ASTM C384 Impedance and Absorption of Acoustical Materials by the Impedance Tube Method

ASTM C423 Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method

ASTM E 795 Standard practices for mounting specimens during sound absorption tests

ASTM E1050 Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones, and a Digital Frequency Analysis System


See also: Sabin, Sound Absorption.

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Subjects: Noise & Vibration