BINAURAL RENDERING OF MULTI-CHANNEL AUDIO SIGNAL Russian patent published in 2014 - IPC H04S3/00 H04S7/00 G10K15/12 

FIELD: physics, acoustics.

SUBSTANCE: binaural rendering of a multi-channel audio signal into a binaural output signal is described. The multi-channel audio signal includes a stereo downmix signal (18) into which a plurality of audio signals are downmixed; and side information includes downmix information (DMG, DCLD), indicating for each audio signal, to what degree the corresponding audio signal was mixed in the first channel and second channel of the stereo downmix signal (18), respectively, as well as object level information of the plurality of audio signals and inter-object cross correlation information, describing similarity between pairs of audio signals of the plurality of audio signals. Based on a first rendering prescription, a preliminary binaural signal (54) is computed from the first and second channels of the stereo downmix signal (18). A decorrelated signal $$(X_d^{n,k})$$ is generated as an perceptual equivalent to a mono downmix (58) of the first and second channels of the stereo downmix signal (18) being, however, decoded to the mono downmix (58).

EFFECT: improved binaural rendering while eliminating restrictions with respect to free generation of a downmix signal from original audio signals.

11 cl, 6 dwg, 3 tbl