DEVICES, SOFTWARES AND METHODS WITH IMPROVED PERFORMANCE OF ACOUSTIC ECHO CANCELER IN VoIP COMMUNICATION
First Claim
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1. An apparatus, comprising:
- one or more processors; and
a memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to;
establish a signaling path with a call manager;
exchange communications over the signaling path with the call manager to establish a communicative connection through a packet switched network to an endpoint;
identify a periodic signal included in received audio content;
identify a duration of the periodic signal;
generate a warning packet that encodes the duration of the periodic signal; and
transmit the warning packet to the endpoint.
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Abstract
Devices, softwares and methods send a warning signal when a periodic signal is present in the audio content of a VoIP connection. In response to the warning signal, an acoustic echo canceller of an IP telephone discontinues its adapting process. A signaling network switch detects when a periodic signal is present in the audio content, and issues a warning signal. A signaling call manager device, when it transmits a tone that has periodicity, it also transmits a warning signal.
11 Citations
21 Claims
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1. An apparatus, comprising:
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one or more processors; and
a memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to;
establish a signaling path with a call manager;
exchange communications over the signaling path with the call manager to establish a communicative connection through a packet switched network to an endpoint;
identify a periodic signal included in received audio content;
identify a duration of the periodic signal;
generate a warning packet that encodes the duration of the periodic signal; and
transmit the warning packet to the endpoint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, comprising:
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one or more processors; and
a memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to;
exchange signaling between a gateway and a call manager over a packet switched network to establish a connection with an endpoint located in the packet switched network;
receive audio content from a circuit switched network;
transmit to the endpoint through the connection data packets that contain an encoded form of the received audio content;
analyze the received audio content for a periodic signal; and
transmit a warning signal through the connection over the packet switched network after the periodic signal is identified, the warning signal controlling an echo canceller;
wherein the data packets and the warning signal are addressed independently of an address for the call manager. - View Dependent Claims (10, 11)
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12. An apparatus, comprising:
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one or more processors; and
a memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to;
receive audio packets over an established connection extending through a packet switched network, the audio packets representing an audio signal;
receive a warning packet corresponding to the audio packets, the warning packet encoding a duration of a periodic signal included the audio signal; and
control an echo canceller according to receipt of the warning packet. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification