Transducer assembly
AssigneeKnowles Electronics, LLC
InventorTimothy K. Wickstrom
Life of this patent
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Abstract
A microphone includes a housing including a structure and a motor assembly. The housing includes an inner space and the motor assembly mounted in the housing divides the inner space into a front volume and a back volume. The structure formed as part of the housing includes a plurality of openings, e.g. notches in different dimensions. The openings may act as a time delay structure to modify the directivity characteristics of the microphone.
Claims20
A transducer comprising:
- a housing having an inner space and a side wall;
- a diaphragm assembly mounted within the housing dividing the inner space into a front volume and a back volume;
- and
- a plurality of openings formed around the side wall of the housing, the plurality of openings communicating with the back volume.
7 The transducer of claim 6, wherein the structure comprises a disk-like, or plate-like structure.
8 The transducer of claim 5, wherein the openings have one of a U-shape or a V-shape.
9 The transducer of claim 5, wherein the housing has a one of a square, a rectangular or a circular cross-section and the structure has a corresponding shape.
The transducer of claim, 14, wherein the electronic device comprises one of a headphone, a cellular phone, a camera, and a hearing aid.
The transducer of claim, 15, wherein the directivity characteristics may be one of a polar response, frequency response, a sensitivity, or combination thereof.
A directional microphone comprising:
- a housing having a top housing and a bottom housing, defining a chamber;
- a diaphragm assembly mounted within the housing dividing the chamber into a front volume and a back volume;
- a front port communicating with the front volume, the front port formed on the bottom housing;
- and
- a structure having a plurality of openings attached between top and bottom housings, the plurality of openings communicating with the back volume;
- wherein the openings are adapted to modify the directivity characteristics of the transducer.
Dependencies are inferred from the claim text.