Patent ID: 10755687

Abstract:
Thin film resonators are deployed in the port ducts of speakers, musical instruments, microphones, and other devices having an important auditory component, to reduce distortion and/or improve other sound qualities. Preferred resonators have a resonator sheet with a first air cavity, and a passageway in an edge of the resonator sheet that opens to the air cavity. The cavity is further defined by a cover sheet, and preferably also a base sheet. The sheets are preferably bonded together by an adhesive. Resonators can be deployed rolled up inside a duct, slightly curved, or laying substantially flat on a surface over which air is flowing. Resonators can be deployed during and/or post manufacturing. Cavities are preferably elliptically shaped, and deployed as substantially mirror image pairs. Openings to the cavities can be positioned on one or more edges of the resonators.