AS 1935-1976 PDF
Method for measurement of normal incidence sound absorption coefficient and specific normal acoustic impedance of acoustic materials by the tube method
standard by Standards Australia, 01/01/1976
Provides an economical method for rapid and absolute measurement of the normal incidence sound absorption coefficient and the specific normal acoustic impedance of a sound absorbing system, e.g. a material with a rigid backing or with air space and rigid plate backing.
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