PITCH FREQUENCY ESTIMATION OF A SPEECH SIGNAL AT A PRIORI UNKNOWN AMPLITUDES AND INITIAL PHASES OF POLYHARMONICAL 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 oscillation at unknown a priori distributions of amplitudes and initial phases of harmonics is developed. For this case the accuracy characteristics of pitch frequency estimation by maximum likelihood method are calculated.