Method of reducing redundancy in a multi-channel data transmission

摘要

In this method, existing cross correlations between the two audio and/or video signal channels x(n), y(n) are determined taking into account the delay-time differences. In the data transmission, a signal channel will transmit the predictor coefficients ak obtained from cross correlations, delay-time differences d, and the prediction errors e(n), At the receiver 2, the signal y(n) of the second channel is reconstructed from the transmitted signal channel x(n), the predictor coefficients ak, the delay-time difference d and the prediction error e(n) of the signal. In this way, the amount of data to be transmitted in the case of multi-channel video or audio signals is reduced. The data is transmitted via a data line 20 or by electromagnetic waves. Coding and multiplexing follows the adaptive inter-channel prediction, Figs 2, 3, (not shown).