Speech synthesis system.

摘要

A speech synthesis system comprising voiced/unvoiced excitation means for generating voiced/unvoiced excitation signals. Filter means are provided for converting excitation signals into digital signals representative of human speech. Converter means are coupled to said filter means for converting said digital signals representative of human speech into analog signals. Audio means are coupled to said converter means for converting said analog signals into audible sound. External excitation input means are provided for receiving externally generated excitation signals, and control means are operably coupled to said voiced/unvoiced excitation means and said external excitation input means for selectively coupling either said voiced/unvoiced excitation means or said external excitation input means to said filter means in response to a control signal. The speech synthesis system may be constructed by employing metal-insulator-semiconductor technology so as to provide circuits capatable of low voltage operation.