Method to generate telephone comfort noise during silence in...

Details Method to generate telephone comfort noise during silence in... Method to generate telephone comfort noise during silence in...

H - Electricity

04

L

H04L 29/02 (2006.01) G10L 19/00 (2006.01) H04L 12/56 (2006.01) H04M 1/253 (2006.01)

Patent

CA 2308647

A method is provided for generating comfort noise in a packetized voice communication system having a transmitter and a receiver. The receiver is provided with a buffer for storing voice packets. The buffer is chosen to be of a predetermine size such that, upon halting the transmitter as a result of silence detection, the buffer is filled with actual silence samples from the transmitter. A comparator compares an output TDM sample pointer with a start of silence pointer of the buffer. In the event that the pointers are the same, silence is flagged and a random number generator loads numbers into the TDM sample pointer for outputting a random sequence of the silence packets to the telephone receiver.

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