Diffuse Sound Absorptive Properties of Parallel-Arranged Perforated Plates with Extended Tubes and Porous Materials

The diffuse sound absorption was investigated theoretically and experimentally for a periodically arranged sound absorber composed of perforated plates with extended tubes (PPETs) and porous materials. The calculation formulae related to the boundary condition are derived for the periodic absorbers,...

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Bibliographic Details
Main Authors: Dengke Li, Daoqing Chang, Bilong Liu
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/13/5/1091