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Tuning of Estimated Sound Absorption Coefficient of Materials of Reverberation Room Method
Shock and Vibration
Acoustical materials are usually used for architectural design, ambient noise, and traffic noise to absorb sound. The sound absorption coefficient (SAC) is often used as the performance index of acoustical materials. It is measured using the reverberation room method (RRM) and the impedance tube method (ITM). The sound source of the RRM is a random incidence in various directions, whereas that of the ITM is a normal incident. The SAC measured by the RRM is more extensive, practical, and costlydoi:10.1155/2022/5192984 doaj:621377de80b843048e23e4de920951c0 fatcat:dnlq2pcahjbjbi23wk4wz43x6i