METHOD FOR REALIZING MACHINE ESTIMATION OF QUALITY OF SOUND SIGNALS Russian patent published in 2007 - IPC G10L19/02 G10L15/00 

FIELD: analysis of sound signal quality, possible use for estimating quality of speech transferred through radio communication channels.

SUBSTANCE: in accordance to the method for machine estimation of sound signal quality, the signal is divided onto critical bands and spectral energy values are computed for critical bands, values of spectral likeness of active phase of fragments are determined, and quality of tested sound signal is determined by means of weighted linear combination of aforementioned quality values for each phase. The difference of the method is that selected fragments of active and inactive phase of both signals are synchronized, inactive phase spectrums are determined for each fragment, resulting spectrums of active and inactive phase of fragments are divided onto additional sets of bands, for each one of which spectral energy values are computed, resulting spectral energies of active and inactive fragment phases are compared in couples, to determine spectral likeness coefficients, resulting likeness coefficient for each phase is determined as an average value of likeness coefficients for all sets of bands, which is the estimate of quality of each phase.

EFFECT: ensured universality and optimized quality of estimation process depending on purposes of estimation.

5 cl, 13 dwg, 6 tbl