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 channels,adecorrelated version of the M audio channels and a set of spatial parameters.The set ofspatial parameters includes an amplitude parameter, a correlation parameterand a phaseparameter. The M audio channels are decorrelated using multiple decorrelationtechniques toobtain the decorrelated version of the M audio channels. This can be used, forexample, forgenerating an N audio channel upmix.