Patent ID: 8605909
Filing Date: 2013-12-10
Classification: H04S

Abstract:
1. A method for sound spatialization of an audio scene comprising a first set comprising a number greater than or equal to unity of first audio channels spatially coded over a given number of frequency sub-bands, and decoded in a transformed domain, into a second set comprising a number greater than or equal to two of second audio channels for reproduction in the time domain, using Head Related Transfer Function (HRTF) filters modeling the acoustic propagation of audio signals corresponding to said first audio channels of said first set, wherein, each of said HRTF filters is converted into the form of at least a gain and a delay applicable in said transformed domain, and wherein said method includes, for each frequency sub-band of said transformed domain, at least: and wherein said filtering by equalization-delay of the sub-band signal includes at least the application of an exponential of a phase shift related to a delay for at least one of the frequency sub-bands.