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):

Report Date:

1973-08-28

Pagination or Media Count:

17.0

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.

Subject Categories:

  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE