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The Quest for Artificial Intelligence by Nils J. Nilsson

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17

Speech Recognition and Understanding Systems

17.1 Speech Processing

The NLP systems I have already described required that their English input be in text format. Yet, there are several instances in which speaking to a computer would be preferable to typing at one. People can generally speak faster than they can type (about three words per second versus about one word per second), and they can speak while they are moving about. Also, speaking does not tie up hands or eyes.

In discussing the problem of computer processing of speech, it is important to make some distinctions. One involves the difference between recognizing an isolated spoken word versus processing a continuous stream of speech. Most AI research has concentrated on the second ...

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