DERIVATION OF MULTICHANNEL SIGNALS FROM TWO OR MORE BASIC SIGNALS

Direct extraction of multichannel signals using correlation comparison, which firstly provides its mathematically exact solution for time-invariant (steady-state) signals, and has a specific residual response in the case of time-variant (non-steady-state) signals, results in direct verification of a signal that forms the basis of all residuals and that is very simple to determine. This can be used in audio coding, for example, for efficiently reducing artifacts or colourations of the tone and other de-masking effects and results in efficient coding of signals of the highest order (such as NHK 22.2).