HYBRID DERIVATION OF SURROUND SOUND AUDIO CHANNELS BY CONTROLLABLY COMBINING AMBIENCE AND MATRIX-DECODED SIGNAL COMPONENTS Russian patent published in 2011 - IPC G10L19/00 H04S3/00 

FIELD: information technology.

SUBSTANCE: method of obtaining two surround sound audio channels from two input audio signals, wherein said audio signals may include components generated by matrix encoding, comprising steps for obtaining ambience signal components from said audio signals, obtaining matrix-decoded signal components from said audio signals, and controllably combining ambience signal components and matrix-decoded signal components to provide said surround sound audio channels, wherein said controllable combination comprises application of gain scale factors.

EFFECT: generation of a pleasant multi-channel signal from a double-channel signal which is either matrix-encoded or non-matrix-encoded without need for the listener changing modes.

23 cl, 7 dwg, 1 tbl