Speech Recognition has a long history of being one of the difficult problems in Artificial Intelligence and Computer Science. As one goes from problem solving tasks such as puzzles and chess to perceptual tasks such as speech and vision, the problem characteristics change dramatically: knowledge poor to knowledge rich; low data rates to high data rates; slow response time (minutes to hours) to instantaneous response time. These characteristics taken together increase the computational complexity of the problem by several orders of magnitude. Further, speech provides a challenging task domain which embodies many of the requirements of intelligent behavior: operate in real time; exploit vast amounts of knowledge, tolerate errorful, unexpected unknown input; use symbols and abstractions; communicate in natural language and learn from the environment. Voice input to computers offers a number of advantages. It provides a natural, fast, hands free, eyes free, location free input medium. However, there are many as yet unsolved problems that prevent routine use of speech as an input device by non-experts. These include cost, real time response, speaker independence, robustness to variations such as noise, microphone, speech rate and loudness, and the ability to handle non-grammatical speech. Satisfactory solutions to each of these problems can be expected within the next decade. Recognition of unrestricted spontaneous continuous speech appears unsolvable at present. However, by the addition of simple constraints, such as clarification dialog to resolve ambiguity, we believe it will be possible to develop systems capable of accepting very large vocabulary continuous speechdictation.

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Authors and Affiliations

Carnegie Mellon University, Pittsburgh, USA

Kai-Fu Lee

Bibliographic Information

Book Title: Automatic Speech Recognition
Book Subtitle: The Development of the SPHINX System
Authors: Kai-Fu Lee
Series Title: The Springer International Series in Engineering and Computer Science
DOI: https://doi.org/10.1007/978-1-4615-3650-5
Publisher: Springer New York, NY
eBook Packages: Springer Book Archive
Copyright Information: Springer Science+Business Media New York 1989
Hardcover ISBN: 978-0-89838-296-9Published: 31 October 1988
Softcover ISBN: 978-1-4613-6624-9Published: 03 March 2013
eBook ISBN: 978-1-4615-3650-5Published: 06 December 2012
Series ISSN: 0893-3405
Edition Number: 1
Number of Pages: XV, 207
Topics: Signal, Image and Speech Processing, Artificial Intelligence

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Table of contents (9 chapters)

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