Accession Number : AD0165113
Title : Programmable Feature Extractor and Speech Recognizer.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Berkowitz,Sidney ; Carlberg,James R.
Report Date : 28 AUG 1973
Pagination or Media Count : 17
Abstract : In the patent a spoken word is analyzed to determine its power spectrum density and slope-intensity product. The recognizer then identifies the word by its unique density and slope-intensity characteristic. The analysis is accomplished through bandpass filters and differentiators which generate signals corresponding to the power spectrum density and slope-intensity product and by a bank of threshold gates which generates binary signals when the power density and the slope-intensity signals are above preset threshold levels. The threshold signals produced are processed through a logic system which indicates which word has been spoken when a unique combination of threshold signals corresponding to a particular word have been triggered.
Descriptors : *Speech recognition, *Voice communications, *Patents, Logic devices, Band pass filters
Subject Categories : Voice Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE