Voice activity detection/silence suppression system
AssigneeAT&T Intellectual Property II, L.P.
InventorsBing Chen, James H. James
Life of this patent
Estimating the term…
Abstract
A Voice Activity Detection/Silence Suppression (VAD/SS) system is connected to a channel of a transmission pipe. The channel provides a pathway for the transmission of energy. A method for operating a VAD/SS system includes detecting the energy on the channel, and activating or suppressing activation of the VAD/SS system depending upon the nature of the energy detected on the channel.
Claims20
A method of controlling electrical communication, the method comprising:
- determining, using a voice energy sampling device, whether voice energy is not associated with a communication channel;
- determining, using a noise energy sampling device, whether noise energy associated with the communication channel is relatively constant based on a level of noise power frequency spectrum fluctuations associated with the noise energy;
- and
- activating silence suppression, using a silence suppression device, in response to determining that the voice energy is not associated with the communication channel and determining that the noise energy associated with the communication channel is relatively constant based on the level of noise power frequency spectrum fluctuations, the activating of silence suppression comprising associating communication energy with the communication channel, the communication energy not having been associated with the communication channel prior to activating silence suppression.
A computer-readable storage device having instructions that, when executed by a processing device, cause the processing device to perform operations comprising:
- determining, using a voice energy sampling device, whether voice energy is not associated with a communication channel;
- determining, using a noise energy sampling device, whether noise energy associated with the communication channel is relatively constant based on a level of noise power frequency spectrum fluctuations associated with the noise energy;
- and
- activating silence suppression, using a silence suppression device, in response to determining that the voice energy is not associated with the communication channel and determining that the noise energy associated with the communication channel is relatively constant based on the level of noise power frequency spectrum fluctuations, the activating of silence suppression comprising associating communication energy with the communication channel, the communication energy not having been associated with the communication channel prior to activating silence suppression.
An apparatus that controls electrical communication, the apparatus comprising:
- a voice energy sampling device, the voice energy sampling device determining whether voice energy is not associated with a communication channel;
- a noise energy sampling device, the noise energy sampling device determining whether noise energy associated with the communication channel is relatively constant based on a level of noise power frequency spectrum fluctuations associated with the noise energy;
- and
- a silence suppression device, the silence suppression device activating silence suppression in response to determining that the voice energy is not associated with the communication channel and determining that the noise energy associated with the communication channel is relatively constant based on the level of noise power frequency spectrum fluctuations, the silence suppression device associating communication energy with the communication channel, the communication energy not having been associated with the communication channel prior to activating silence suppression.
Dependencies are inferred from the claim text.