FIELD: radio engineering and communications.
SUBSTANCE: inventions relate to the field of digital communication and voice processing technologies under noise pollution. Applied are methods of filtering a noisy speech signal in a difficult jamming environment. To that end poly-spectrum results of analysis are used to accurately assess the spectral characteristics of the noise impact. Inventive process is carried out with an additional spectral subtraction correction signals based on empirical mode decomposition procedure and adaptive digital filtering using a low-frequency coefficient bi-correlation obtained by analyzing the total bi-correlation in areas of concentration of low-density area of the processed segment of bi-amplitude of noisy speech signal.
EFFECT: technical result is to increase the signal to noise ratio of the purified speech.
3 cl, 10 dwg
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