Wideband sound absorption of a double-layer microperforated panel with inhomogeneous perforation

• Main Authors: Putra, Azma, Mosa, Ali Ibrahim, Jameel, Esraa Al-Amer, Ramlan, Roszaidi
• Format: Article
• Language: English
• Published: Elsevier Ltd 2020
• Online Access: http://eprints.utem.edu.my/id/eprint/24183/2/IMPP-DOUBLELAYER_APAC2020.PDF; http://eprints.utem.edu.my/id/eprint/24183/; https://www.sciencedirect.com/science/article/pii/S0003682X19304335
• Institution: Universiti Teknikal Malaysia Melaka

Micro-perforated panel (MPP) absorber is increasingly gaining popularity as an alternative sound absorber in buildings compared to the well-known synthetic porous materials. A single MPP has a typical feature of a Helmholtz resonator with a high amplitude of absorption but a narrow absorption freque...