FIELD: data processing.
SUBSTANCE: invention relates to means for encoding and decoding data. Configuring, using a block group (GOB) compression/encoding device data, including a plurality of blocks by processing a frame of delta-sigma-modulated digital data obtained from an input analogue audio signal in form of a block. Using a compression/coding device, a conversion table is generated to encode GOB data. Digital data of each block contained in GOB data are compressed and encoded using a compression/encoding device using a conversion table. One unit comprises the number of frame and frame data fragments equal to the number of channels in the received audio signal. Compressed group of data units additionally contains conversion table. M-bits of the delta-sigma-modulated digital data are converted to N bits (M>N) by referencing the conversion table.
EFFECT: technical result consists in improvement of degree of compression of audio data while providing lossless audio data compression.
10 cl, 21 dwg
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