Speech resynthesis with a hardware synthesizer

Resynthesizing speech in an LPC-vocoder is time consuming and hardly possible in real time. This paper describes efforts to resynthesize the speech wave by means of a digital hardware speech synthesizer (Rockland). For that purpose a set of five formants have to be calculated from the inverse filter. Special attention will be given to the continuity of individual formant tracks, in order to avoid transiet phenomena in the digital formant circuit.