PITCH FREQUENCY ESTIMATION OF A SPEECH SIGNAL BY A MAXIMUM LIKELIHOOD METHOD AT KNOWN DISTRIBUTION OF AMPLITUDES AND INITIAL PHASES OF HARMONICS OF THE COMPOUND CARRYING OSCILLATION
The approach of pitch frequency estimation of a speech signal at optimum time processing on the basis of mathematical model with polyharmonic carrying is developed. The accuracy characteristics of pitch frequency estimation by maximum likelihood method at known a priori distributions of amplitudes and initial phases of harmonics are calculated.