Patent ID: 8654983

Claim:
A spatial decoder for producing a pair of binaural output channels (lb, rb) using spatial parameters (sp) and a single audio input channel (s), said spatial decoder comprising: a parameter conversion unit for converting the spatial parameters (sp) into binaural parameters (bp) using parametrized perceptual transfer functions (hp), the binaural parameters depending on both the spatial parameters and the parametrized perceptual transfer functions; a single transform unit for transforming the single audio input channel (s) into a transformed audio channel (S); a decorrelation unit for decorrelating the transformed audio channel (S) to generate a transformed decorrelated signal (D); a spatial synthesis unit for synthesizing a pair of transformed binaural channels (Lb, Rb) by applying the binaural parameters (bp) to the transformed audio channel (S) and the transformed decorrelated signal (D); and a pair of inverse transform units for inversely transforming the transformed binaural channels (Lb, Rb) into the pair of binaural output channels (lb, rb).