speak was a Unix utility that used a predefined set of rules to turn a file of English text into phoneme data compatible with a Federal Screw Works (later Votrax) model VS4 "Votrax" Speech Synthesizer. It was first included in Unix v3 and possibly later ones, with the OS-end support files and help files persisting until v6. As of late 2011, the original source code for speak, and portions of speak.m (which is generated from speak.v) were discovered.
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