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US 2014/0153740 A1Published application
Beamforming pre-processing for speaker localization
AssigneeNuance Communications, Inc.
InventorsTobias Wolff, Markus Buck, Gerhard Uwe Schmidt
Life of this patent
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Abstract
Methods and apparatus to beamform a first plurality of microphone signals using at least one beamforming weight to obtain a first beamformed signal, beamform a second plurality of microphone signals using the at least one beamforming weight to obtain a second beamformed signal, and adjust the at least one beam forming weight so that the power density of at least one perturbation component present in the first or the second plurality of microphone signals is reduced.
Claims20
A method comprising:
- beamforming a first plurality of microphone signals using at least one beamforming weight to obtain a first beamformed signal;
- beamforming a second plurality of microphone signals using the at least one beamforming weight to obtain a second beamformed signal;
- and
- adjusting the at least one beamforming weight so that the power density of at least one perturbation component present in the first or the second plurality of microphone signals is reduced.
1 more element
An article, comprising:
- a non-transitory computer readable storage medium having stored instructions that enable a machine to:
- beamform a first plurality of microphone signals using at least one beamforming weight to obtain a first beamformed signal;
- beamform a second plurality of microphone signals using the at least one beamforming weight to obtain a second beamformed signal;
- and
- adjust the at least one beamforming weight so that the power density of at least one perturbation component present in the first or the second plurality of microphone signals is reduced.
2 more elements
A system, comprising:
- a first beamformer module to receive a first plurality of microphone signals using at least one beamforming weight to obtain a first beamformed signal;
- a second beamformer module to receive a second plurality of microphone signals using the at least one beamforming weight to obtain a second beamformed signal;
- and
- a control module, which includes a processor, to adjust the at least one beamforming weight so that the power density of at least one perturbation component present in the first or the second plurality of microphone signals is reduced.
1 more element
Dependencies are inferred from the claim text.