ENCODING DEVICE AND METHOD, DECODING METHOD AND DEVICE AND PROGRAM Russian patent published in 2019 - IPC G10L19/08 H04S5/02 

FIELD: data processing.

SUBSTANCE: invention relates to audio encoding and decoding. An order table is generated showing the order of arrangement of the mixing coefficients determined based on the distances between the plurality of input loudspeakers and the plurality of output loudspeakers. Said mixing coefficients are the audio signal mixing coefficients of a plurality of input loudspeakers prepared for a plurality of corresponding output loudspeakers, and are used in the mixing process to convert the audio signals of a plurality of channels corresponding to the location of a plurality of input loudspeakers into the audio signals of a plurality of channels corresponding to the location of a plurality of output loudspeakers. Then the many mixing factors are put into the order indicated in the order table. It is followed by calculation of the difference value between two consecutive mixing coefficients from the mixing coefficients put in order. And the difference value calculated for each of the mixing coefficients is encoded.

EFFECT: increased efficiency of audio coding.

15 cl, 21 dwg