AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, REPRESENTATION OF ENCODED MULTICHANNEL AUDIO SIGNAL, METHODS AND SOFTWARE Russian patent published in 2014 - IPC G10L19/00 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to encoding and decoding a multichannel audio signal. The audio signal decoder is designed to generate a decoded representation of a multichannel audio signal based on the encoded representation of the multichannel audio signal and includes a time warping decoder for reconstructing time warping of multiple audio signals included in the encoded representation of the multichannel audio signal. The audio signal encoder generates an encoded representation of a multichannel acoustic signal and includes a generator of the encoded representation of the audio signal, which in turn selectively generates a representation of the audio signal containing information about the general time warping outline, which cumulatively characterises multiple audio channels of the multichannel acoustic signal, or an encoded representation of the audio signal containing information about individual time warping outlines, separately characterising each of the multiple audio channels, where the choice depends on the similarity or difference between time warping outlines relating to each of the multiple audio channels reflected in the information.

EFFECT: improved characteristics of an encoder/converter for modified discrete cosine transform with time warping, providing an effective bit rate when storing and/or transmitting a multichannel audio signal.

14 cl, 40 dwg