AUDIOLABEL ENCODING AND DECODING METHOD Russian patent published in 2024 - IPC G10L21/02 G10L19/18 

FIELD: computer engineering.

SUBSTANCE: invention relates to computer engineering for audio signal processing. Result is achieved due to the following stages: the audiolabel is supplemented with a checksum and its noise-immune coding is performed, then complementing the resulting bit sequence to a multiple of N of the length of K bits, where N is given by the echo signal parameters; dividing the bit sequence K obtained at the previous step into L blocks with length of N bits; dividing the array of samples of the input audio signal into L blocks of M samples; for each block of the input audio signal obtained at the previous step, forming a block of the filtered audio signal of length M samples using a frequency filter with a linear phase characteristic, and the amplitude of the filtered signal block is attenuated using the attenuation coefficient of the audiolabel; for each block of the input audio signal processed at the previous step, two or more pairs of echo signals with a positive or negative sign are generated based on the obtained parameters of the echo signal; resultant audio signal is generated by element-by-element addition of blocks of input audio signal and corresponding block consisting of one or more echo signals obtained at previous step.

EFFECT: increase in the recognition range while maintaining the sound irritation level metric (ODG) within the permissible limits.

6 cl, 3 dwg