RECONSTRUCTING AUDIO SIGNALS WITH MULTIPLE DECORRELATION TECHNIQUES AND DIFFERENTIALLY CODED PARAMETERS

摘要

Systems and methods of audio signal processing are provided that relate toimproved upmixing, whereby N audio channels are derived from M audio channelsandspatial parameters. The solution involves introducing uncorrelated signalcomponents intocorrelated upmix signal components in response to spatial parameters which areinterpolatedover time. This can be used, for example, for generating an N channel upmixfrom M channelsand spatial parameters.