Abstract
This chapter introduces wood-based composite materials in sound absorption and insulation. The sound attenuation mechanisms due to absorption and insulation are presented. The measurements of sound absorption and insulation properties are briefly illustrated. Furthermore, the progress in functional composites are detailed. The sound absorbing properties of some kinds of porous and resonated absorption materials are analyzed. This chapter also illustrates the airborne and impact sound insulation properties of wood-based composite materials. Additionally, this chapter presents the theory prediction models of the functional composites to give a full understanding of sound transmission in the composites and contribute to the innovation and development of the materials. The chapter ends in the summary on the development of wood-based sound absorption and insulation materials and future research.
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