Mems microphone with ingress protection
AssigneeIDEAL Industries, Inc.
InventorsAamir Qureshi, Brandon Trainer, Andy Mitham
Life of this patent
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Abstract
A microphone assembly includes a housing defining an acoustic cavity having a sound inlet for transmitting a sound in to the acoustic cavity. A micro-electro-mechanical (MEMS) microphone is located at least partially within the housing adjacent the acoustic cavity. The MEMS microphone includes a microphone aperture acoustically coupled with the aperture of the housing. An acoustic vent is located adjacent the microphone aperture to substantially allow sound to pass through the acoustic vent while substantially preventing a foreign contaminant from entering the microphone aperture.
Claims20
A microphone assembly comprising:
- a microphone housing defining an acoustic cavity and comprising a sound inlet for transmitting a sound into the acoustic cavity;
- a micro-electro-mechanical (MEMS) microphone operatively mounted at least partially within the microphone housing and comprising an aperture acoustically coupled with the acoustic cavity for receiving the sound;
- a MEMS microphone support adjustably coupled to the microphone housing for supporting the MEMS microphone within the microphone housing, the MEMS microphone support being movable relative to the acoustic cavity;
- and
- an acoustic vent located between the acoustic cavity and sealingly mounted to the aperture.
A microphone assembly comprising:
- a housing defining an aperture extending through the housing;
- a micro-electro-mechanical (MEMS) microphone located at least partially within the housing, the MEMS microphone comprising a microphone aperture acoustically coupled with the aperture of the housing;
- and
- an acoustic vent adjacent the microphone aperture to substantially allow sound to pass through the acoustic vent and to substantially prevent a foreign contaminant from entering the microphone aperture.
A microphone assembly comprising:
- microphone means for detecting sound, the microphone means comprising a microphone wave guide for transmission of a sound;
- housing means for supporting the microphone means at least partially within the housing means, the housing means defining a housing wave guide for transmission of the sound therethrough and towards the microphone wave guide;
- and
- acoustic venting means located between the housing wave guide and the microphone wave guide for substantially allowing the sound to pass through the acoustic venting means and for substantially preventing a foreign contaminant from reaching the microphone wave guide.
Dependencies are inferred from the claim text.