25. A control arrangement for a speech sound generating system, said speech sound generating system comprising: means for simulating the frequency response of the vocal tract, said frequency response including two or more resonant peaks or formants movable in frequency; means for simulating electrically the vibration of the vocal cords, with variable pitch period; means for combining said vocal cord simulation with said frequency response simulation of the vocal tract to produce a resulting waveform; and transducing means to cause the resulting waveform to be emitted as an audible sound; said control arrangement comprising; means continuously responsive to operator input for simultaneously and continuously controlling the frequency locations of all said formants; and additional means continuously responsive to operator input for controlling said vocal cord pitch variation.
25. A control arrangement for a speech sound generating system, said speech sound generating system comprising: means for simulating the frequency response of the vocal tract, said frequency response including two or more resonant peaks or formants movable in frequency; means for simulating electrically the vibration of the vocal cords, with variable pitch period; means for combining said vocal cord simulation with said frequency response simulation of the vocal tract to produce a resulting waveform; and transducing means to cause the resulting waveform to be emitted as an audible sound; said control arrangement comprising; means continuously responsive to operator input for simultaneously and continuously controlling the frequency locations of all said formants; and additional means continuously responsive to operator input for controlling said vocal cord pitch variation. 27. The arrangement as defined in claim 25 said means continuously responsive to operator input measures motion into substantially perpendicular directions; and further including transducer means to resolve said motion into components in the two substantially perpendicular directions; said system further including frequency tuning means; whereby one of each of said components of motion affects the frequency location of one of each of said resonant peaks or formants.