Elimination of clipping associated with VAD-directed silence suppression
First Claim
Patent Images
1. A method comprising:
- receiving a voice signal in a buffer;
ending silence suppression; and
condensing the voice signal.
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Abstract
A method and apparatus for elimination of clipping associated with VAD-directed silence suppression includes receiving a voice signal in a buffer during the delay between the start of voice activity and the detection of the voice activity. Then, the voice signal is played from the buffer in condensed form, e.g., by dropping packets or slightly accelerating playback of the signal from the buffer. After voice activity is detected, the voice signal may continue to be buffered and condensed until the buffer is completely depleted. The voice signal may then be transmitted directly, without being buffered or condensed.
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Citations
40 Claims
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1. A method comprising:
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receiving a voice signal in a buffer;
ending silence suppression; and
condensing the voice signal. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus comprising:
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means for receiving a voice signal in a buffer;
means for ending silence suppression; and
means for condensing the voice signal. - View Dependent Claims (7, 8, 9, 10)
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11. A computer readable medium having instructions, which, when executed by a processing system, cause the system to:
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receive a voice signal in a buffer;
end silence suppression; and
condense the voice signal. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus comprising:
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a buffer to receive and store a voice signal;
a voice activity detector to detect voice activity and to output a voice activity detection signal; and
a condensing device to read the voice signal from the buffer and to output a condensed voice signal in response to the voice activity detection signal. - View Dependent Claims (17, 18, 19, 20)
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21. A method comprising:
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suppressing silence in a voice signal for a time period, the voice signal having a first temporal length;
detecting voice activity in the voice signal during the time period of silence suppression;
buffering the voice signal during a buffer delay period approximately between a first time when the voice activity is detected and a second time when the silence suppression ends; and
condensing the voice signal to have a second temporal length less than the first temporal length. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A computer readable medium having instructions, which, when executed by a processing system, cause the system to:
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suppress silence in a voice signal for a time period, the voice signal having a first temporal length;
detect voice activity in the voice signal during the time period of silence suppression;
buffer the voice signal during a buffer delay period approximately between a first time when the voice activity is detected and a second time when the silence suppression ends; and
condense the voice signal to have a temporal length less than the first temporal length. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification