QUANTISATION AND ENTROPY CODING OF PARAMETERS FOR LOW-LATENCY AUDIO CODEC Russian patent published in 2025 - IPC G10L19/08 G10L19/32 

FIELD: data processing.

SUBSTANCE: invention relates to the field of entropy coding of parameters for audio codecs with low latency and to mechanisms for achieving target bitrates of parameters by iterative refinement of bitrate of parameters using a range of technologies of quantisation and entropy coding. Disclosed is a method for frame-by-frame encoding of metadata for an input signal, wherein the metadata contain a plurality of at least partially interrelated parameters calculated from the input signal. Method involves iterative execution of the following steps for each frame using a looped process: determining a processing strategy from a plurality of processing strategies for calculating and quantizing parameters, calculating and quantizing parameters based on the determined processing strategy to obtain quantized parameters, and encoding the quantized parameters. In particular, each of the plurality of processing strategies comprises a corresponding first indicator indicating the order related to the calculation and quantization of the individual parameters. Processing strategy is determined based on at least one bitrate threshold value.

EFFECT: minimizing additional information (parameters) while maintaining a high frame refresh rate for the audio data base.

17 cl, 4 dwg, 3 tbl