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The Computer Journal 1994 37(9):735-744; doi:10.1093/comjnl/37.9.735
© 1994 by British Computer Society
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Speech Recognition in the Office: How the Technology Supports Dictation

R. A. Sharman *

IBM (UK) Laboratory, Hursley Park, Winchester SO21 2JN, UK

Automatic speech recognition by computer, in real-time and using only an input audio signal, has been developed over the last two decades to the point where it is useful for a number of practical applications, such as telephone enquiry services and office dictation. The purpose of talking to a computer is first examined and the inherent reasons for the difficulty of understanding speech are suggested. Three specific problems in the recognition process are highlighted: data rate reduction, speaker variability and application domain dependence. The currently successful methodology used in speech recognition systems is described in non-technical terms. The principal processes required for real-time automatic speech recognition are introduced, and the need for adaption and customization discussed. Some suggestions for the directions of future research and applications are given.

Received June 13 1994. revised November 9 1994.

* IBM (UK) Laboratory, Hursley Park, Winchester SO21 2JN, UK


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