25th International Congress on Noise Control Engineering (Inter-Noise 96) - Noise control: The Next 25 Years, Liverpool, United Kingdom, 30 July - 02 August 1996, pp.939-941, (Full Text)
A number of plates made of perlite were prepared. Plates were moisturized at different levels. Their absorption coefficients were measured by the ''two-microphone impedance tube'' method. Experimental results were introduced and the moisture effects on acoustical properties of plates made of perlite were discussed.