Accession Number : AD0746333

Title :   A Study of the Capability of Grammatical Analysis to Improve Accuracy in Continuous Speech Recognition for Command and Control.

Descriptive Note : Interim scientific rept.,

Corporate Author : CENTER FOR COMMUNICATIONS RESEARCH INC ROCHESTER N Y

Personal Author(s) : Larkin,Wilbur D. ; Newcomb,William B.

Report Date : 30 JUN 1972

Pagination or Media Count : 24

Abstract : The speech samples, or utterances, are digitized on premises by off-line computer I/O station and recorded on 7-track magnetic tape in computer acceptable format. Following the conversion of the data to conventional IBM form, a spectrum analysis is performed. A short-time spectrum is generated for approximately each 10 ms of data (the increment is 96 data points). A Hamming window function is used to reduce the sidelobes (or leakage); the window is approximately 30 ms long (270 data points). The primary emphasis of the effort to date has been on the grammatical analysis portion of the work. The effort in speech signal analysis has been directed at providing data for demonstration of the grammatical analysis system, rather than optimization of the speech signal analysis programs. (Author)

Descriptors :   (*SPEECH RECOGNITION, *GRAMMARS), (*COMMAND AND CONTROL SYSTEMS, SPEECH RECOGNITION), SPECTRUM SIGNATURES, DATA PROCESSING, OPTIMIZATION, ACCURACY

Subject Categories : Command, Control and Communications Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE