Patent ID: 8099183

Claim:
A multi-channel audio signal decoding system, comprising: a TTT decoder to decode two audio channel signals and space information, with a corresponding bitstream comprising corresponding two encoded audio channel signals, into three audio channel signals, as first, second, and third channel signals, wherein the space information comprises information of magnitude differences and/or similarities between corresponding channels; a first OTT decoder to decode the first channel signal into a first plural channel signals; a second OTT decoder to decode the second channel signal into a second plural channel signals; a third OTT decoder to decode the third channel signal into a third plural channel signals; a fourth OTT decoder to decode one of the first plural channel signals output by the first OTT decoder into a fourth plural channel signals; and a fifth OTT decoder to decode one of the second plural channel signals output by the second OTT decoder into a fifth plural channel signals, wherein the system is arranged to generate a 5.1 channel output from the corresponding bitstream comprising the two encoded audio channel signals such that a decoder is configured to decode a channel signal into a center audio channel C and an LFE audio channel based on corresponding space information.