Speech Recognition History
Speech recognition systems date as far as 1940, when the U.S department of defense sponsored the first academic pursuits in speech recognition, but the project was a failure.
In the late 1950's IBM started its research in this domain. The objective of this research was to arrive at a correlation between sounds and the words they represent.
At the 1964 world's Fair IBM demonstrated recognition of spoken digits.
In the late 1960's the department of defense funded again a new research initiative.
The research included Automatic Prototyping that allows computers to search out specific sounds and store them for comparison and analysis, and Dynamic Programming that recognizes conversational speech despite variation in rates of speech.
During this period, IBM pioneered a statistical approach to speech recognition that allows the system to improve its performance automatically, using powerful statistical logarithms adapted from information theory.
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