Sound Absorption of Micro-Perforated Panel

Abstract

and profile of micro-perforated single-, double-, and triple-layer systems with varying panel parameters were calculated by using the lumped and the distributed models for acoustic impedances. The sound absorption levels and profiles predicted by using the distributed model with Maa’s acoustic impedance showed a close agreement for all panel systems with those obtained experimentally by using impedance-tube and reverberation-room tests.