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US 11,238,853 B2Granted
Keyword-based audio source localization
AssigneeComcast Cable Communications, LLC
InventorScott Kurtz
Life of this patent
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Abstract
Systems, apparatuses, and methods are described for determining a direction associated with a detected spoken keyword, forming an acoustic beam in the determined direction, and listening for subsequent speech using the acoustic beam in the determined direction.
Claims20
A method comprising:
- receiving, by a computing device and from a plurality of microphones, one or more indications of first speech detected in a plurality of listening zones;
- determining, based on the one or more indications of the first speech, that the first speech comprises a keyword;
- determining a direction associated with the keyword;
- detecting, using an acoustic beam formed by at least some of the plurality of microphones, pointed in the direction associated with the keyword, and having a width that is narrower than a width of each of the plurality of listening zones, second speech associated with the keyword;
- and
- recognizing the second speech to generate an indication of recognized speech.
3 more elements
A method comprising:
- determining, by a computing device, based on signals from a plurality of microphones, and for a plurality of directions, audio characteristics associated with first speech;
- determining that the first speech comprises a keyword;
- determining, based on the audio characteristics, a direction and a width associated with the keyword;
- directing, using at least some of the plurality of microphones, an acoustic beam having the direction;
- detecting, using the acoustic beam, second speech;
- and
- recognizing the second speech to generate an indication of recognized speech.
4 more elements
A method comprising:
- detecting, by each of a plurality of devices, and using a plurality of microphones of each of the plurality of devices, first speech;
- determining that the first speech comprises a keyword;
- determining, for each of the plurality of devices, one or more scores associated with the keyword;
- determining, based on the one or more scores for each of the plurality of devices, a first device of the plurality of devices and a direction of an acoustic beam;
- forming, using at least some of the plurality of microphones of the first device, the acoustic beam having the direction;
- detecting, by the first device and using the acoustic beam, second speech;
- and
- recognizing the second speech to generate an indication of recognized speech.
5 more elements
Dependencies are inferred from the claim text.