APPLICATION FOR MULTI-CHANNEL decorrelation Advanced multi upmixing

摘要

1. A method for obtaining M output audio signals of the N audio output signals for representing the scattered sound field, where M is greater than N and greater than two, and wherein the method comprises the steps of: receiving N input audio signals, wherein the N input audio signals represent sound scattered field prepared By intermediate sound signals of N input audio signals so that each intermediate signal is psychoacoustically decorrelated with N output sound signals and if K is greater than one, has been psychoacoustically dekorr elirovan with all other intermediate signals, where K is greater than or equal to one and less than or equal to MN; iosuschestvlyayut mixing N input audio signals and the K intermediate signals to produce M output audio signals, wherein the mixing is performed in accordance with the system of linear equations with coefficients matrix that defines a plurality of N + K vectors into M-dimensional space, and wherein at least K of N + K vectors substantially orthogonal to all other vectors in mnozhestve.2. A method according to claim 1, characterized in that each of the K receive intermediate signals by delaying one of the N input audio signalov.3. A method according to claim 1, characterized in that the corresponding intermediate signal is obtained by a process which comprises the steps of: filtering one of the N input audio signals in accordance with a first impulse response in a first frequency subband to obtain a first frequency sub-band signal dependent on frequency change in phase having a bimodal distribution in frequency with peaks substantially, equal