Patent ID: 8812141

Claim:
A multi-channel audio signal decoding system, comprising: a two-to-three decoder to decode two audio channel signals and using TTT spatial information into first, second, and third channel signals; a first one-to-two (OTT) decoder to decode the first channel signal using first OTT spatial information into first plural channel signals; a second OTT decoder to decode the second channel signal using second OTT spatial information into second plural channel signals; a third OTT decoder to decode the third channel signal using third OTT spatial information into third plural channel signals; a fourth OTT decoder to decode one of the first plural channel signals output by the first OTT decoder using fourth OTT spatial information into fourth plural channel signals; and a fifth OTT decoder to decode one of the second plural channel signals output by the second OTT decoder using fifth OTT spatial information into fifth plural channel signals, wherein all of the decoders are arranged by a tree-structure.