Blind source separation using similarity measure
AssigneeGoogle Inc.
InventorsWillem Bastiaan Kleijn, Sze Chie Lim
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Abstract
A method includes: receiving time instants of audio signals generated by a set of microphones at a location; determining a distortion measure between frequency components of at least some of the received audio signals; determining a similarity measure for the frequency components using the determined distortion measure; and processing the audio signals based on the determined similarity measure.
Claims20
A method comprising:
- receiving time instants of electronic audio signals generated by a set of microphones at a location;
- determining a distortion measure between frequency components of at least some of the received electronic audio signals;
- determining similarity measures for the frequency components using the determined distortion measure, the similarity measures measuring a similarity of the electronic audio signals at different time instants for respective frequency bins;
- and
- performing blind source separation of the electronic audio signals, the blind source separation including processing the electronic audio signals based on the determined similarity measure, including aggregating the similarity measures over a frequency band corresponding to the frequency bins.
A computer program product tangibly embodied in a non-transitory storage medium, the computer program product including instructions that when executed cause a processor to perform operations including:
- receiving time instants of audio signals generated by a set of microphones at a location;
- determining a distortion measure between frequency components of at least some of the received audio signals;
- determining similarity measures for the frequency components using the determined distortion measure, the similarity measures measuring a similarity of the audio signals at different time instants for respective frequency bins;
- and
- performing blind source separation of the audio signals, the blind source separation including processing the audio signals based on the determined similarity measure, including aggregating the similarity measures over a frequency band corresponding to the frequency bins.
A system comprising:
- a processor;
- and
- a computer program product tangibly embodied in a non-transitory storage medium, the computer program product including instructions that when executed cause the processor to perform operations including:
- receiving time instants of audio signals generated by a set of microphones at a location;
- determining a distortion measure between frequency components of at least some of the received audio signals;
- determining similarity measures for the frequency components using the determined distortion measure, the similarity measures measuring a similarity of the audio signals at different time instants for respective frequency bins;
- and
- performing blind source separation of the audio signals, the blind source separation including processing the audio signals based on the determined similarity measure, including aggregating the similarity measures over a frequency band corresponding to the frequency bins.
Dependencies are inferred from the claim text.