SYSTEMS AND METHODS OF FILTRATION TO DETERMIN GAIN Russian patent published in 2018 - IPC G10L21/208 G10L21/388 

FIELD: physics.

SUBSTANCE: in the method of processing the signal, the minimum spacing between the pairs of the spectral lines (LSP) for the LSP pairs of the band of high frequencies in the frame of the audio signal is determined, a component corresponding to the condition of forming artefacts is determined based on the minimum flow between the LSP, and if the audio signal includes the mentioned component, a part of the band of high frequencies of the audio signal is filtered to form a filtered output signal of the band of high frequencies, information of gain based on the relationship of the first energy output is determined, an auxiliary information of the band of high frequencies based on at least one of the band of high frequencies of the audio signal is output. The auxiliary information of the band of high frequencies indicates information of gain of the frame, the LSP pairs of the band of high frequencies and information of a temporary gain corresponding to the subframe gain estimates based on the filtered output signal of high frequencies.

EFFECT: improving the detection accuracy and filtering the audio signal noise.

40 cl, 8 dwg