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