Multichannel audio Coder Decoder, multi-channel audio, Methods and computer program using an adjustment based on a contribution of residual signals of a Signal decorrelacionada

摘要

A Decoder for multi-channel audio to provide at least two audio signals Graduates on the basis of a coded representation is configured to perform a weighted combination of a Down Mix Signal, a Signal and a residual Signal decorrelacionada, M Way of obtaining audio signals are Graduates.The Multichannel Audio Decoder is configured to determine a Weight which describes a contribution of the signal decorrelacionada in the weighted combination of the residual Signal.A Multichannel Audio Encoder to provide a coded representation of a multi-channel audio signal is configured to obtain a Down Mix signal on the basis of the multi-channel audio signal, to provide parameters that describe the dependencies between the channels Multichannel audio signal, and to provide a residual Signal.The Multichannel Audio Encoder is configured to vary the amount of residual Signal included in the coded Representation in terms of the multi-channel audio signal.