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KF5JRV > TECH 02.05.16 12:32l 30 Lines 1445 Bytes #-3561 (0) @ WW
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Subj: Voder Speech Synthesizer
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The Voder, the First Electronic Speech Synthesizer: a Simplified
Version of the Vocoder 1936 - 1939
Between 1936 and 1939 electronic and acoustic engineer Homer Dudley
and a team of engineers at Bell Labs produced the first electronic
speech synthesizer, called the Voder ("Voice Operation DEmonstratoR").
The Voder was demonstrated at the 1939-1940 World's Fair in Flushing
Meadows, New York and the 1939 Golden Gate International
Exposition on Treasure Island, San Francisco Bay, by experts who used
a keyboard and foot pedals to play the machine and emit speech.
The Voder was a simplified version of the Vocoder (short for voice
encoder) developed by Dudley from 1926 onward, and for which Dudley
received US patent 2151091 for Signal Transmission on
March 21, 1939. Dudley's vocoder was used in the SIGSALY system built
by Bell Labs engineers in 1943. SIGSALY was used for encrypted
high-level voice communications during World War II. Since then
the Vocoder has been widely applied in music, television production,
filmmaking and games, usually for robots or talking computers.
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