16. The speech synthesizer of claim 12 wherein said vocal source is adapted to produce a voiced excitation signal having a waveform comprised of a first segment that increases in magnitude, a second segment that decreases in magnitude, and a third segment that remains at a constant magnitude.
16. The speech synthesizer of claim 12 wherein said vocal source is adapted to produce a voiced excitation signal having a waveform comprised of a first segment that increases in magnitude, a second segment that decreases in magnitude, and a third segment that remains at a constant magnitude. 19. The speech synthesizer of claim 16 wherein said suppression means increases said predetermined bandwidths of said resonant filters during said first segment of said voiced excitation signal, decreases said bandwidths of said resonant filters from said increased levels during said second segment of said voiced excitation signal, and has no effect on said predetermined bandwidths of said resonant filters during said third segment of said voiced excitation signal.