July 2018
Intermediate to advanced
404 pages
9h 5m
English
In 1952, at Bell Labs, the engineers Davis, Biddulph, and Balashek built the Automatic Digit Recognizer (Audrey), a rudimentary voice recognition system. Audrey was limited by the technology of the time but was able to recognize the numbers 0 to 9. The Audrey system, which processed the 10 digits through voice recognition, was 6 feet tall and covered the walls of Bell Labs, containing large numbers of analog circuits with capacitors, amplifiers, and filters. Audrey did the following three things:
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