Angle independent acoustic structures for broadband sound absorption and sound transmission loss

Abstract

An acoustic structure includes an acoustic scatterer with a plurality of repeating cells and a corresponding plurality of resonant channels such that the acoustic scatterer is an angle independent acoustic absorber. The plurality of resonant channels each have an open end and a terminal end, and foam extends across the open ends of the plurality of resonant channels. And a layer of foam extending around the acoustic structure and/or or positioned at open ends of the resonant channels broadens the absorption and sound transmission loss bandwidth.

Dependencies are inferred from the claim text.