ADAPTIVE FILTERING
First Claim
Patent Images
1. A system comprising:
- K≧
1 output paths,M≧
1 error input paths,Q≧
1 source input paths,K filter modules that are arranged in signal paths upstream of the K output paths and downstream of the Q source input paths and that have controllable transfer functions, andK filter control modules that are arranged in signal paths downstream of the M error input paths and downstream of the Q source input paths and that are configured to control the transfer functions of the K filter modules according to an adaptive control algorithm based on error signals on the M error input paths and source input signals on the Q source input paths, whereinthe system further comprises at least one loudspeaker-room-microphone constraint.
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Abstract
A system and method include filtering with controllable transfer functions in signal paths upstream of K≧1 output paths and downstream of Q≧1 source input paths, and controlling with filter control signals of the controllable transfer functions according to an adaptive control algorithm based on error signals on M≧1 error input paths and source input signals on the Q source input paths. The system and method further include at least one loudspeaker-room-microphone constraint.
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Citations
20 Claims
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1. A system comprising:
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K≧
1 output paths,M≧
1 error input paths,Q≧
1 source input paths,K filter modules that are arranged in signal paths upstream of the K output paths and downstream of the Q source input paths and that have controllable transfer functions, and K filter control modules that are arranged in signal paths downstream of the M error input paths and downstream of the Q source input paths and that are configured to control the transfer functions of the K filter modules according to an adaptive control algorithm based on error signals on the M error input paths and source input signals on the Q source input paths, wherein the system further comprises at least one loudspeaker-room-microphone constraint. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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filtering with controllable transfer functions in signal paths upstream of K≧
1 output paths and downstream of Q≧
1 source input paths, andcontrolling with filter control signals of the controllable transfer functions according to an adaptive control algorithm based on error signals on M≧
1 error input paths and source input signals on the Q source input paths, whereinthe method further comprises at least one loudspeaker-room-microphone constraint. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system comprising:
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at least one K output path; at least one M error input path; at least one Q source input path; at least one loudspeaker-room-microphone constraint; a plurality of K filter modules that are arranged in signal paths upstream of the at least one K output path and downstream of the at least one Q source input path and that have controllable transfer functions; and a plurality of K filter control modules that are arranged in signal paths downstream of the at least one M error input path and downstream of the at least one Q source input path and that are configured to control the transfer functions of the plurality of K filter modules according to an adaptive control algorithm based on error signals on the at least one M error input path and source input signals on the at least one Q source input path. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification