Invention Grant
- Patent Title: Apparatus and method for MEMS microphone performance via back volume
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Application No.: US17499440Application Date: 2021-10-12
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Publication No.: US11863925B2Publication Date: 2024-01-02
- Inventor: Sullivan Do , Yu Du
- Applicant: Harman International Industries, Incorporated
- Applicant Address: US CT Stamford
- Assignee: Harman International Industries, Incorporated
- Current Assignee: Harman International Industries, Incorporated
- Current Assignee Address: US CT Stamford
- Agency: Brooks Kushman P.C.
- Main IPC: H04R1/04
- IPC: H04R1/04 ; B81B7/02 ; H04R1/22 ; H04R1/28 ; H04R19/04

Abstract:
In at least one embodiment, a microphone assembly including a substrate, a printed circuit board (PCB), a micro-electro-mechanical systems (MEMS) transducer, a first lid, and a second lid is provided. The substrate defines a first port that extends completely therethrough. The PCB defines a sound opening that extends completely therethrough. The MEMS transducer is positioned on a first side of the substrate. The first lid defines a second port and covers the MEMS transducer and the first port. The first lid and the substrate define a front volume of air that surrounds the MEMS transducer. The second lid is positioned on the second side of the PCB. A cavity of the second lid, the sound opening of the PCB, the sound opening of the PCB, and the first port of the substrate define a back volume of air that is greater than the front volume of air.
Public/Granted literature
- US20230114156A1 APPARATUS AND METHOD FOR MEMS MICROPHONE PERFORMANCE VIA BACK VOLUME Public/Granted day:2023-04-13
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