Accession Number : ADP005598

Title :   Speech is More Than Just an Audible Version of Text,

Corporate Author : NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Hunt,Melvyn J.

Report Date : FEB 1987

Pagination or Media Count : 12

Abstract : Man-machine communication by text using keyboards and screens is much more firmly established than voice I/O. Partly because of this, voice tends to be regarded as an audible version of text. This view is misleading: it leads to an underestimation of both the difficulties and the potential of voice I/O. Speech encodes information on factors such as speaker identity and attitude and sentence structure in ways that have no counterpart in text. The style of language appropriate for speech is quite different from that appropriate for text. Speech output and input systems tend to ignore those aspects of the speech signal that are not directly represented in text, and they frequently use a style and syntax suited to text rather than speech. In the case of speech output, the technology needed to exploit the additional aspects of the speech signal is already appearing, and recordings illustrating the possibilities will be played. In the case of speech output, the technology is not yet developed, but the ability to manipulate features such as voice quality in speech output systems may be a powerful tool in learning how to exploit such features in speech input systems. (Author)

Descriptors :   *VOICE COMMUNICATIONS, *INPUT OUTPUT PROCESSING, *SPEECH, TEXT PROCESSING, WRITING, DECODING, CODING, PHONEMES

Subject Categories : Voice Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE