The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1978
Filed:
Aug. 09, 1976
Matsumi Suzuki, Ebina, JA;
Yoichi Ichikawa, Ebina, JA;
Fuji Xerox Co., Ltd., Tokyo, JA;
Abstract
A voice recognition system is disclosed using the centroid of frequency spectra obtained by frequency analysis of a voice as the characteristic parameter of the voice. The locus of the centroid is obtained by periodically measuring, during the utterance of a selected phrase, the average frequency and the average amplitude. The locus constitutes a pattern of the centroid of frequency spectra and is stored in a memory. During recognition a person keys in a known address to extract the stored pattern of his voice from the memory and then reutters the key phrase. The centroid of freqency spectra is recalculated and the locus obtained is compared with the one in the memory. Humming distance is defined as the distance between a recorded locus of centroid of frequency and a newly inputted locus of centroid of frequency.