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Showing 1 to 4 of 4 for “"microperforated panel"”.
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Microperforated Panel (MPP) Absorbers for Impulsive and Narrow-Band Noise Control: Design, Simulation, and Experimental Validation
… This dissertation explores the development of microperforated panel (MPP) absorbers as a scalable, fiberless, and visually transparent solution to mitigate impulsive narrowband noise that is similar to the pickleball sound. Building upon Maa’s classical theory, the research first presents the …
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Application of microperforated elements in axial fan noise control and silencer design
The microperforated panel (MPP) is considered to be an alternative sound absorbing material, which could replace the traditional glass fibers and other porous materials because of its sound absorbing characteristics in a wide frequency range. The MPP is also very useful in various human involved …
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Low Frequency Noise Reduction Using Novel Poro-Elastic Acoustic Metamaterials
… acoustic heterogeneous (HG) metamaterials and microperforated (MPP) acoustic metamaterials. HG metamaterials consist of poro-elastic material with a periodic arrangement of embedded masses acting as an array of mass-spring- damper systems. MPP acoustic metamaterials consist of periodic layers …
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Optimal design of sound absorbing systems with microperforated panels
… materials. The combination of microperfoated panels (MPP) (one of the fiber-free sound absorbing materials), usually in the form of a thin panel with small holes, and an air backing may be one of the preferred solutions. These panels can be designed in many ways, and usually feature many small …