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| Joined: | Mar 15th, 2008 |
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I don't know the TI chips. Are they still available? I only know of the Votrax SC-01 which was popular in the Eighties. The SpeakLet chip is controlled over a serial line; the protocol is described the manual. In the EVP-ITC group there are some members who build devices to let the SJ chip generate randomized speech. Frank Sumption uses a random voltage generator and a schmitt trigger to feed the serial input with random pulses; Rob Fitzgerald uses a programmed PIC and an EMF receiver unit to control the chip.
Stefan