Abstract
A new pattern playback system has been devised, and the preliminary experiment with a tentative synthesizer has shown very promising results. The function of the frequency dividing networks (filter bank) is achieved simply through the mechanical resonances of the crystals, which at the same time serve as the erectro-optic converters (light valves). The present simple set has 9 main channels (timbre control) and a subsidiary source (pitch and hiss) control channel. Simple Japanese sentences have been synthesized. A design for the analyser-synthesizer (coded speech recorder) is given, and the application to the vocoder without electrical filter bank is suggested.
