In this study, the sound absorption performance of a wavy micro-perforated panel absorber
(WMPPA) is investigated. First, a numerical model is established to calculate the sound …

A sub-structuring approach, along with a unit cell treatment, is proposed to model expansion
chamber silencers with internal partitions and micro-perforated panels (MPPs) in the …

The broadband sound attenuation characteristics of expansion chamber silencers can be
altered by their internal configuration. Three-dimensional modeling of such systems …

Despite the increasing interest in Micro-perforated panels (MPPs) for various noise control
applications, the acoustic behavior of MPP liners in flow ducts has not been fully …

In this paper, a theoretical model of a micro-perforated panel (MPP) backed by a finite cavity
and flush-mounted in an infinite baffle is developed and its performance in terms of sound …

A plate silencer consists of an expansion chamber with two side-branch cavities covered by
light but extremely stiff plates. It works effectively with a wide stopband from low-to-medium …

Micro-perforated panels (MPPs) are widely used for broadband sound absorptions. For a
MPP exposed to a grazing flow, existing acoustic impedance formulas based on different …

Modeling of vibro/acoustic systems with embedded acoustic components of complex
geometries is a challenging task. In particular, the presence of irregular-shaped acoustic …

Abstract The reverse Condensed Transfer Function (rCTF) method is a substructuring
approach based on the concept of condensed mechanical receptance and acoustical …

Low-frequency noise generated by ventilation systems propagates into indoor environment
through ducts. In this study, a novel micro-perforated panel (MPP) muffler, with the absence …