GENERATION OF MULTICHANNEL AUDIO SIGNALS Russian patent published in 2011 - IPC G10L19/00 

FIELD: information technology.

SUBSTANCE: decoder generates a multichannel audio signal, such as a surround sound signal, from a received first signal. The multichannel signal comprises a second set of audio channels and the first signal comprises a first set of audio channels. The decoder comprises a receiver which receives the first signal. The receiver is connected to an estimate processor which generates estimated parametric data for the second set of audio channels in response to characteristics of the first set of audio channels The estimated parametric data relate characteristics of the second set of audio channels to characteristics of the first set of audio channels. The decoder furthermore comprises a spatial audio decoder which decodes the first signal in response to the estimated parametric data to generate the multichannel signal comprising the second set of channels. The invention allows use of spatial audio decoding with signals which are not encoded by a spatial audio encoder.

EFFECT: high quality of audio signal.

19 cl, 6 dwg