METHOD OF SEPARATION OF SPEECH AND PAUSES BY ANALYSIS OF THE VALUES OF PHASES OF FREQUENCY COMPONENTS OF NOISE AND SIGNAL

摘要

FIELD: data processing.;SUBSTANCE: invention relates to transmission technology and transmission of speech information. Technical result is achieved due to the method of separation of speech and pauses, in which a “sliding window”, which is an interval of a given duration, is set so that it contains only noise, then it is shifted by the offset value. Method of spectral analysis to determine the amplitudes, frequencies and phases of the harmonic components of noise or a mixture of noise and signal. Amplitudes of the noise envelope amplitudes are calculated for the current position of the “sliding window” using the results of spectral analysis from the samples that were taken for the current position of the “sliding window”, the calculated noise amplitude values are subtracted, total number of components is determined, for each harmonic the number of values of pairwise phase differences of this harmonic and other harmonics are determined that do not exceed the specified value, from these numbers the number with the highest value is determined. Ratio of this number to the total number of harmonics is calculated.;EFFECT: technical result consists in higher accuracy of determining the moment of occurrence and increasing the probability value of a correct decision about the appearance of a speech signal in presence of acoustic noise.;1 cl, 2 dwg, 2 tbl