LSP Voice synthesizer

An LSP voice synthesizer, comprising:

• a memory for storing various voice parameters necessary to LSP voice synthesis;
• controlling means, coupled to said memory, for reading out a predetermined voice parameter in accordance with external input data;
• excitation means, coupled to said controlling means, for producing excitation information in accordance with the predetermined voice parameter received from said controlling means;
• LSP voice synthesizing means, coupled to said controlling means and to said excitation means and comprising a plurality of parallel operating circuits, each of which includes a parallel multiplier circuit for dividing input data into upper bits and lower bits, and for multiplying the upper and the lower bits separately at specified different timings to obtain a partial product of the upper bits and a partial product of the lower bits, delay circuits and shift registers, for performing LSP voice synthesis by parallel processing of the predetermined voice parameter received from said controlling means and the excitation information received from said excitation means;
• D/A converting means, coupled to said LSP voice synthesizing means, for converting a digital output from said LSP voice synthesizing means to an analog signal;
• and
• timing signal generating means, coupled to said controlling means and to said LSP voice synthesizing means for generating a predetermined timing signal to each one of said controlling means, said LSP voice synthesizing means, and said excitation means, on the basis of an externally supplied clock pulse.