Method and system for generating colored comfort noise in the absence of silence insertion description packets

A system for generating comfort noise, the system comprising:

• an identifier for identifying a plurality of silence packets in speech data at a decoder side;
• an adaptation algorithm for adapting to the plurality of silence packets in the speech data wherein the adaptation algorithm adapts with time;
• a detector for determining a start of a silence segment;
• and
• a comfort noise generator for generating comfort noise by the adaptation algorithm at the start of the silence segment.

A method for generating comfort noise for use in a communication system, the method comprising the steps of:

• receiving communication information comprising segments of voice data and non-voice data;
• differentiating between the voice data segments and the non-voice data segments;
• passing on to a destination revised communication information comprising passed voice data representing the voice data, without passing on a majority of the non-voice data, wherein the bandwidth required to pass on the revised communication information is less than the bandwidth required to pass on the communication information;
• and
• generating comfort noise at least in part based on one or both of the passed voice data and data representing non-voice data characteristics.

In a communication system having first and second communication devices communicatively coupled over a network, a system for generating comfort noise comprising:

• an encoder receiving communication information from the first communication device, the communication information comprising segments of voice data and non-voice data;
• a detector differentiating between the voice data segments and the non-voice data segments;
• the encoder adapted to encode the communication information and having means for transmitting the encoded communication information;
• the encoded communication information comprising encoded voice data representing the voice data,
• a decoder having an input adapted to receive the encoded communication information transmitted by the transmitting means;
• the decoder being adapted to decode the encoded communication information and to generate decoded communication information comprising decoded voice data;
• the transmitting means adapted to not pass a majority of the non-voice data to the decoder, wherein the bandwidth required to pass on the encoded communication information is less than the bandwidth required to pass on the communication information;
• and
• a comfort noise generator coupled with the decoder and adapted to generate comfort noise at least in part based on one or both of the decoded voice data and data representing non-voice data characteristics.