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>EFFECT OF A MEMBRANE ATTACHED TO A MICROPERFORATED PANEL ABSORBER ON ITS SOUND ABSORPTIVITY:POSSIBILITY OF ADJUSTING THE ACOUSTIC PROPERTIES OF A MICROPERFORATED PANEL BY COVERING MATERIALS
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EFFECT OF A MEMBRANE ATTACHED TO A MICROPERFORATED PANEL ABSORBER ON ITS SOUND ABSORPTIVITY:POSSIBILITY OF ADJUSTING THE ACOUSTIC PROPERTIES OF A MICROPERFORATED PANEL BY COVERING MATERIALS