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US 9,432,762 B2Granted
Back cavity microphone implementation
AssigneeBlackBerry Limited
InventorsAndre John Van Schyndel, Chris Forrester, Sylvain Angrignon
Life of this patent
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Abstract
A system and method to perform signal processing using a loudspeaker output are described. The system includes an enclosure configured to define a back cavity of the loudspeaker and components to obtain a representation of the loudspeaker acoustic output at the back cavity. The system also includes a processor to process the representation to perform the signal processing.
Claims16
A system to perform signal processing using a loudspeaker acoustic output, the system comprising:
- an enclosure configured to define a back cavity of the loudspeaker;
- components configured to obtain an attenuated representation of the loudspeaker acoustic output at the back cavity, wherein the components include a port in the back cavity, a microphone having a first side arranged at the port in the back cavity, and a second port disposed on a second side of the microphone;
- and
- a processor configured to process the attenuated representation to perform the signal processing.
1 more element
A method of performing signal processing of a loudspeaker acoustic output of a device, the method comprising:
- enclosing the loudspeaker in an enclosure configured to define a back cavity of the loudspeaker;
- obtaining an attenuated representation of the loudspeaker acoustic output in the back cavity;
- processing the attenuated representation of the loudspeaker acoustic output using a processor to perform the signal processing;
- disposing a port in the back cavity;
- arranging a first side of a microphone at the port in the back cavity;
- obtaining the attenuated representation of the loudspeaker acoustic output using the microphone;
- and
- disposing a second port on a second side of the microphone.
5 more elements
Dependencies are inferred from the claim text.