HYBRID ACOUSTIC BARRIER AND ABSORBER

A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in...

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Bibliographic Details
Main Authors CHANG CHIA-MING, HOGAN JANET M, MCKNIGHT GEOFFREY P, MONTGOMERY JOSHUA M
Format Patent
LanguageEnglish
Published 19.02.2015
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary:A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in a predetermined range of frequencies. The rigid structure, the membrane, and the back sheet define a Helmholtz cavity; the Helmholtz cavity is configured to absorb acoustic energy at a frequency within the predetermined range of frequencies.
Bibliography:Application Number: US201414497184