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:
Aug. 10, 1999
Filed:
Mar. 17, 1997
Applicant:
Inventor:
Keizaburo Takagi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
704233 ; 379411 ;
Abstract
A single-input spectral subtraction section 13 removes ambient noise around the caller from received signals. A characteristic correction section 14 estimates transmission characteristics from received and transmitted signals and corrects the transmitted signals to coincide with the received signals. And finally, a dual-input subtraction section 15 removes an automated voice by subtracting the output of the characteristic correction section 14 from the output of the single-input spectral subtraction section 13.
Takagi, Keizaburo. (1999). Canceler of speech and noise, and speech recognition apparatus (U.S. Patent No. 5937379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5937379
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile