Scalable multi-channel audio coding

Scalable multi-channel audio coding

  • CN 101,151,659 A
  • Filed: 03/16/2006
  • Published: 03/26/2008
  • Est. Priority Date: 03/30/2005
  • Status: Active Grant
First Claim
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1. audio coder that is applicable to the coded multi-channel sound signal, this scrambler comprises:

  • -scrambler composite module, (ECM), be used to produce the main signal part, (m) and the residual signal part, (s), described main signal part and residual signal partly are first and second sound signals, (x1, x2) combination is represented, this main signal part and residual signal part, (m, s) be by to first and second sound signals, (x1, x2) the applied mathematics process obtains, wherein this mathematical procedure relates to first spatial parameter, (SP1), this first spatial parameter comprises first and second sound signals, (x1, the description of spatial character x2)-parameter generators (PG) is used for producing-the first parameter (PS1) group, comprise second spatial parameter (SP2) and-the second parameter (PS2) group, comprise the 3rd spatial parameter (SP3) and-output maker is used to produce the output signal behind the coding, and this output signal comprises-the first output (OP1), this first output comprise main signal part (m) and first parameter group (PS1), and-the second output (OP2), this second output comprise residual signal part (s) and second parameter group (PS2).

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