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OwnerQuang Khanh Ngoc DUONG, Pierre BERTHET +2inventors
InventorsQuang Khanh Ngoc DUONG, Pierre BERTHET, Eric ZABRE, Michel KERDRANVAT
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A recording is usually a mixture of signals from several sound sources. The directions of the dominant sources in the recording may be known or determined using a source localization algorithm. To isolate or focus on a target source, multiple beamformers may be used. In one embodiment, each beamformer points to a direction of a dominant source and the outputs from the beamformers are processed to focus on the target source. Depending on whether the beamformer pointing to the target source has an output that is larger than the outputs of other beamformers, a reference signal or a scaled output of the beamformer pointing to the target source can be used to determine the signal corresponding to the target source. The scaling factor may depend on a ratio of the output of the beamformer pointing to the target source and the maximum value of the outputs of the other beamformers.
1-15. (canceled)
A method, to be performed in an audio processing apparatus, for processing an audio signal, the audio signal being a mixture of input signals from at least two audio inputs, the method comprising:
An apparatus for processing an audio signal, the audio signal being a mixture of at least two audio inputs, said apparatus comprising at least two beamformers and at least one processor configured to:
A computer readable storage medium having stored thereon instructions for processing an audio signal, the audio signal being a mixture of input signals from at least two audio inputs, the processing comprising:
Dependencies are inferred from the claim text.