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US 10,096,312 B2Granted
Noise cancellation system
AssigneeAvnera Corporation
InventorsAmit Kumar, Wai Laing Lee, Jianping Wen
Life of this patent
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Abstract
An adaptive noise canceling system can include a noise cancellation processor having an audio input for receiving an input audio signal, a microphone input structured to receive one or more microphone signals from a monitored environment, and a filter processor structured to produce a filtering function based on one or more filter parameters. The system can also include an adaptivity processor structured to change the one or more filter parameters in the noise cancellation processor based on a changing operating environment of the adaptive noise canceling system.
Claims8
An adaptive gain system, comprising:
- a speaker;
- a feedback microphone configured to sample the speaker;
- a feed-forward microphone configured to sample a listening environment;
- a controllable amplifier electrically coupled between the feed-forward microphone and the speaker;
- an adaptivity controller electrically coupled with the controllable amplifier and configured to control the controllable amplifier based at least in part on output from the feedback microphone and output from the feed-forward microphone;
- a correlator electrically coupled with the adaptivity controller and configured to cause the adaptivity controller to adjust a gain of the controllable amplifier;
- and
- a first band pass filter electrically coupled between the feedback microphone and the correlator.
5 more elements
Dependencies are inferred from the claim text.