METHOD AND SYSTEM FOR A SUBBAND ACOUSTIC ECHO CANCELLER WITH INTEGRATED VOICE ACTIVITY DETECTION
First Claim
1. A method for wireless system control, the method comprising:
- during processing of wirelessly communicated audio signals, adjusting receive power of said wirelessly communicated audio signals based on voice activity detection of said wirelessly communicated audio signals.
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Accused Products
Abstract
Methods and systems for a subband acoustic echo canceller with integrated voice activity detection are disclosed and may include adjusting transmit and/or receive powers of wirelessly communicated audio signals based on voice activity detection via subband analysis of the wirelessly communicated audio signals. The receive power may be adjusted by utilizing a reduced duty cycle, or by conveying voice activity detection information via an asynchronous control channel in a Bluetooth application. A plurality of subbands may be generated utilizing a fast Fourier transform, and a first subset of the subbands corresponding to voice activity may be selected and a second subset of the subbands may be selected that corresponds to background noise. The processing of the subsets may be dynamically adjusted due to variations in the voice activity or background noise. Comfort noise may be generated and transmitted at a reduced bandwidth utilizing the second subset of the subbands.
109 Citations
39 Claims
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1. A method for wireless system control, the method comprising:
during processing of wirelessly communicated audio signals, adjusting receive power of said wirelessly communicated audio signals based on voice activity detection of said wirelessly communicated audio signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for wireless system control, the system comprising:
one or more circuits that handles processing of wirelessly communicated audio signals, and adjusts receive power of said wirelessly communicated audio signals based on voice activity detection of said wirelessly communicated audio signals. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A machine-readable storage having stored thereon, a computer program having at least one code section for wireless system control, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
during processing of wirelessly communicated audio signals, adjusting receive power of said wirelessly communicated audio signals based on voice activity detection of said wirelessly communicated audio signals. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
Specification