METHOD AND DEVICE for estimating the period of the fundamental tone of a voice signal and classification in numerical encoders voice.

摘要

PRESENTED METHOD AND DEVICE FOR CODING DIGITALLY a voice signal wherein in each frame is HOLDS AN ANALYSIS LONG-TERM FOR ESTIMATING THE PERIOD OF TONE (D) AND LRF COEFFICIENT (B) AND GAIN (G), and a priori classification SIGNAL AS ACTIVE / INACTIVE AND FOR SIGNAL ACTIVE AS signal voiced / unvoiced. CIRCUITS ESTIMATE OF PERIOD (LT1) computed THAT PERIOD ON THE BASIS OF covariance function adequately compensated, and a circuit GRADING (RV) DISTINGUISHED SIGNS WITH VOICE SIGNALS WITHOUT VOICE COMPARING coefficient LRF Y EARNING WITH VARIABLE THRESHOLD frame by frame.