References in periodicals archive ?
Sound transparent layers were used for confining the lining materials: this way, it was possible to vary both the thickness of the lining and the absorbing material, and therefore to analyze the effect that thickness and absorbing material have on insertion loss, that is, on the effectiveness of the dissipative muffler.
2]) the insertion of the dissipative muffler along the test duct returned insertion loss values:
Reactive mufflers are generally used to attenuate pressure pulsations since the small holes and porous materials of dissipative mufflers may become clogged with deposits (Soedel 2007) eventually.