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Directional microphone and associated packing techniques

  • US 10,508,024 B2
  • Filed: 08/22/2018
  • Issued: 12/17/2019
  • Est. Priority Date: 11/18/2015
  • Status: Active Grant
First Claim
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1. A device, comprising:

  • an acoustic sensor havinga first substrate, the first substrate including a first surface;

    a sensing diaphragm mounted to the first surface and configured to sense sound pressure; and

    a cavity below the sensing diaphragm;

    a channel with an inlet open at an edge of the first substrate and an outlet connected with the cavity; and

    a housing enclosing the acoustic sensor, the housing having a cover attached to a second substrate supporting the first substrate;

    wherein the cover includes a first opening at least partially overlapping with the sensing diaphragm in a direction perpendicular to the first surface, and a second opening at a side of the cover, the second opening being disposed adjacent to the inlet of the channel.

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