12. The speech synthesizer of claim 11 wherein said suppression means increases said bandwidths as the magnitude of said voiced excitation signal increases.
12. The speech synthesizer of claim 11 wherein said suppression means increases said bandwidths as the magnitude of said voiced excitation signal increases. 13. The speech synthesizer of claim 12 wherein said suppression means is adapted to produce a variable pulse width square wave signal whose duty cycle is proportional to the magnitude of said voiced excitation signal.