Hybrid supported acoustic membrane assembly

Abstract

An assembly (10) includes a first support member (15) having a plurality of first apertures (50); a second support member (20) having a plurality of second apertures (55); and a polymer membrane (25) disposed between the first support member (15) and the second support member (20). The polymer membrane (25) is spaced from the first support member (15) by a first distance (30) and from the second support member (20) by a second distance (35). Each of the first distance or the second distance is from 10/|iri to 100/|iri. The assembly provides a standard deviation of insertion loss of 0.8 dB or less over a frequency range of 200 Hz to 10,000 Hz after a water entry pressure (WEP) test.

Dependencies are inferred from the claim text.