DISPOSITIF ET PROCEDE POUR LA PRODUCTION D'UN SIGNAL DE PAROLE

DISPOSITIF DE SYNTHESE LPC DANS LEQUEL EST UTILISEE UNE MODULATION DU SIGNAL SYNTHETISE PAR UN SIGNAL DE FENETRE, EN VUE DE DIMINUER LE BOURDONNEMENT CARACTERISTIQUE DE TELS DISPOSITIFS. CETTE MODULATION FAIT DISPARAITRE LES DISCONTINUITES A LA TRANSITION ENTRE DEUX SEGMENTS DE PAROLE VOCALE.APPLICATION : NOTAMMENT VOCODEURS. LPC-synthesizing device, in which a modulation of the synthesized signal with a window signal is used to reduce the buzz which is characteristic for such devices. This window signal has an amplitude which initially increases gradually from substantially zero value to a constant value, and then decreases gradually from the constant value to substantially zero value. As a result of this modulation the signal in the transition between two segments of voiced speech is forced to zero thereby eliminating any transition discontinuities, the existence of which causes the buzz.