Patent ID: 7813513
Filing Date: 2010-10-12
Classification: G10L,H04S

Abstract:
1. A multi-channel encoder operable to process input signals conveyed in a plurality of input channels to generate corresponding output data comprising down-mix output signals together with complementary parametric data, the encoder including: (a) a down-mixer for down-mixing the input signals to generate the corresponding down-mix output signals; and (b) an analyzer for processing the input signals, said analyzer being operable to generate said parametric data complementary to the down-mix output signals, said encoder being operable when generating the down-mix output signals for also generating said parametric data, wherein said parametric data is specifically configured (i) to allow for subsequent decoding of the down-mix output signals (ii) for predicting signals of channels (iii)(1) processed and (iii)(2) then discarded within the encoder, thereby enabling a subsequent decoding via a decoder to substantially regenerate with enhanced accuracy the corresponding channels previously discarded within the encoder by predicting information of the previously discarded channels from the down-mix output signals and the parametric data.