talking board

12-04 — elektor december 1981 talking board In an earlier article ("Chattering chips", Elektor September 1981), several speech synthesis systems were discussed. For various reasons, the Texas Instruments "Solid State Speech" system seemed the best bet — certainly for microprocessor enthusiasts. In the first place, it can produce an output that is something like a human voice coming over a telephone line: not hi-fi, admittedly, but good enough to notice traces of an american accent coming through! Furthermore, the coding system used is fairly "logical", which means that it is quite feasible to work out codes for new words — without having to resort to a huge computer. talking board to select the next bit in the selected speech memory byte. The same I/O pulse clocks each bit in turn into a flip-floes which passes the bit stream to the speech processor. When the bit counter has scanned all eight bits, it increments the address buffer/counter to select the next memory byte. As i...