@inproceedings{8a35b80f6e014deeb8b0265ec7e23d6f,
title = "Low-frequency enhancement of sound absorption using a microperforated panel backed by membrane -based resonators",
abstract = "Micro-perforated panels (MPP) are widely employed to control the environmental noise although it generally suffers from a limited sound absorption bandwidth particularly at low frequencies. In this study, a compound MPP structure backed by membrane-based resonators is constructed to enhance sound absorption performance at low frequencies. The sound absorption characteristics of the compound structure is studied to investigate the sound absorption performance when a membrane-based resonator is incorporated. Through tuning the tension stress applied to the membrane, the membrane resonator{\textquoteright}s resonance frequency can be shifted, affecting the sound absorption performance of the MPP structure. Through parametric studies, it is found that the tension stress applied on the membrane significantly affects the sound absorption performance due to modification of resonant modes of the membrane-based resonators. The results demonstrate that the proposed compound structure can enhance the sound absorption performance at low frequencies and provide a practical solution for the application of MPP.",
keywords = "membrane resonator, micro-perforated panel, sound absorption, tension stress, tunable",
author = "Cong Gao and Dunant Halim",
note = "Publisher Copyright: {\textcopyright} 2024 Proceedings of the International Congress on Sound and Vibration. All rights reserved.; 30th International Congress on Sound and Vibration, ICSV 2024 ; Conference date: 08-07-2024 Through 11-07-2024",
year = "2024",
language = "English",
series = "Proceedings of the International Congress on Sound and Vibration",
publisher = "Society of Acoustics",
editor = "{van Keulen}, Wim and Jim Kok",
booktitle = "Proceedings of the 30th International Congress on Sound and Vibration, ICSV 2024",
}