System and method for improved use of voice activity detection
View Patent ↗The present invention is a system and method for packetizing actual noise signals, typically background noise, received by an access gateway from a speaking party and transmitting these packetized noise signals via a network to an egress gateway. The egress gateway converts the packetized noise signal into noise signals suitable for output and transmits the output noise signals to a listening party. When the access gateway detects that no voice signal is being received and only a noise signal is being received for a predetermined period of time, the access gateway instructs the egress network to continually transmit output noise signals to the listening party and ceases to transmit packetized noise signals to the egress gateway.
1. A system for communicating data signals and having an access silence suppressor and an egress silence suppressor, the system comprising:
an access gateway that receives and converts an input voice signal into a packetized voice signal and receives and converts an input noise signal into a packetized noise signal; and
an egress gateway that receives and converts the packetized voice signal into an output voice signal and receives and converts the packetized noise signal into an output noise signal,
wherein after the access gateway ceases to receive the input voice signal, the access gateway ceases to transmit the packetized noise signal through the network and instructs the egress gateway to output the output noise signal.
2. The system of claim 1 , wherein after the access gateway ceases to receive the input voice signal, the access gateway receives, packetizes and transmits the input noise signal for a predefined hang-over time prior to ceasing transmission of the packetized noise signal.
3. The system of claim 1 , wherein the system uses at least one of Voice over Internet Protocol (VoIP) technology, Voice over Frame technology or Voice over ATM technology.
4. The system of claim 1 , wherein the input voice signal is received from a speaking party and the output voice signal is output to a listening party.
5. The method of claim 1 , wherein the egress gateway continuously outputs the noise signal until a later voice signal is received.
6. A system for communicating audio signals, the system having an access silence suppressor and an egress silence and suppressor, the system comprising:
an access gateway that receives and converts an input noise signal into a packetized noise signal; and
an egress gateway that receives and converts the packetized noise signal into an output noise signal, wherein after ceasing to receive an input voice signal and when the access gateway receives the input noise signal for a predefined hang-over time, the access gateway ceases to transmit the packetized noise signal through the network and instructs the egress gateway to output the output noise signal.
7. A system for communicating audio signals, the system having an access silence suppressor and an egress silence suppressor, the system comprising:
an access gateway that receives and transmits an input noise signal; and
an egress gateway that receives and outputs the output noise signal, wherein when the access gateway receives the input noise signal for a predefined hang-over time, the access gateway ceases to transmit the input noise signal through a network and instructs the egress gateway to output the output noise signal.
8. The method of claim 7 , wherein the egress gateway continuously outputs the output noise signal until another input voice signal is received.
9. A method for silence suppression during a telephone call, the method comprising:
receiving at an access network and converting an input voice signal into a packetized voice signal;
receiving, at the access network, and converting an input noise signal into a packetized noise signal;
receiving and converting, at an egress network, the packetized voice signal into an output voice signal;
receiving and converting, at the egress network, the packetized noise signal into an output noise signal, and
if the access network continually receives the input noise signal, then ceasing to transmit the packetized noise signal by the access network and instructing the egress network to output the output noise signal.
10. The method of claim 9 , wherein the ceasing step occurs when the access gateway receives the input noise signal for a predefined hang-over time.
11. The method of claim 9 , wherein the input voice signal is received from a speaking party and the output voice signal is output to a listening party.
12. The method of claim 9 , wherein the method uses at least one of Voice over Internet Protocol (VoIP) technology, Voice over Frame technology and Voice over ATM technology.
13. The method of claim 9 , wherein the egress network outputs the output noise signal continuously.
14. The method of claim 13 , wherein the egress network outputs the output noise signal continuously until another input voice signal is received.
15. A silence management system including an access silence suppressor and an egress silence suppressor, the system comprising:
an access network means for receiving and converting an input voice signal into a packetized voice signal and receiving and converting an input noise signal into a packetized noise signal; and
an egress network means for receiving the packetized voice signal, converting the packetized voice signal into an output voice signal receiving and converting a packetized noise signal into an output noise signal, wherein the access network means ceases to transmit the packetized noise signal when the access network continually receives the input noise signal and instructs the egress network means to output the output noise signal.
16. The system of claim 15 , wherein the access gateway receives the input noise signal for a predefined hang-over time prior to ceasing transmission of the packetized noise signal.
17. The system of claim 15 , wherein the system uses at least one of Voice over Internet Protocol (VoIP) technology, Voice over Frame technology and Voice over ATM technology.
18. The system of claim 15 , wherein the input voice signal is received from a speaking party and the output voice signal is output to a listening party.
19. The method of claim 15 , wherein the egress network means continuously outputs the output noise signal.
20. The method of claim 15 , wherein the egress network outputs the output noise signal continuously until another input voice signal is received.