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US 8,898,058 B2Granted
Systems, methods, and apparatus for voice activity detection
AssigneeQUALCOMM Incorporated
InventorsJongwon Shin, Erik Visser, Ian Ernan Liu
Life of this patent
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Abstract
Systems, methods, apparatus, and machine-readable media for voice activity detection in a single-channel or multichannel audio signal are disclosed.
Claims50
A method of processing an audio signal, said method comprising:
- based on information from a first plurality of frames of the audio signal, calculating a series of values of a first voice activity measure;
- based on information from a second plurality of frames of the audio signal, calculating a series of values of a second voice activity measure that is different from the first voice activity measure;
- based on the series of values of the first voice activity measure, calculating a boundary value of the first voice activity measure;
- and
- based on the series of values of the first voice activity measure, the series of values of the second voice activity measure, and the calculated boundary value of the first voice activity measure, producing a series of combined voice activity decisions.
2 more elements
An apparatus for processing an audio signal, said apparatus comprising:
- means for calculating a series of values of a first voice activity measure, based on information from a first plurality of frames of the audio signal;
- means for calculating a series of values of a second voice activity measure that is different from the first voice activity measure, based on information from a second plurality of frames of the audio signal;
- means for calculating a boundary value of the first voice activity measure, based on the series of values of the first voice activity measure;
- and
- means for producing a series of combined voice activity decisions, based on the series of values of the first voice activity measure, the series of values of the second voice activity measure, and the calculated boundary value of the first voice activity measure.
2 more elements
An apparatus for processing an audio signal, said apparatus comprising:
- a first calculator configured to calculate a series of values of a first voice activity measure, based on information from a first plurality of frames of the audio signal;
- a second calculator configured to calculate a series of values of a second voice activity measure that is different from the first voice activity measure, based on information from a second plurality of frames of the audio signal;
- a boundary value calculator configured to calculate a boundary value of the first voice activity measure, based on the series of values of the first voice activity measure;
- and
- a decision module configured to produce a series of combined voice activity decisions, based on the series of values of the first voice activity measure, the series of values of the second voice activity measure, and the calculated boundary value of the first voice activity measure.
2 more elements
A non-transitory machine-readable storage medium comprising tangible features that when read by a machine cause the machine to:
- calculate a series of values of a first voice activity measure, based on information from a first plurality of frames of the audio signal;
- calculate a series of values of a second voice activity measure that is different from the first voice activity measure, based on information from a second plurality of frames of the audio signal;
- calculate a boundary value of the first voice activity measure, based on the series of values of the first voice activity measure;
- and
- produce a series of combined voice activity decisions, based on the series of values of the first voice activity measure, the series of values of the second voice activity measure, and the calculated boundary value of the first voice activity measure.
2 more elements
Dependencies are inferred from the claim text.