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:
Sep. 01, 1992
Filed:
Mar. 15, 1990
Applicant:
Inventors:
Baruch Mazor, Newton Centre, MA (US);
Dale E Veeneman, Southborough, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L / ; A61F / ;
U.S. Cl.
CPC ...
381 36 ; 364419 ; 381 47 ;
Abstract
A method of encoding speech includes a limited search of a tree-code excitation codebook with a closed loop gain calculation for each test path under consideration. The gain calculation occurs when minimizing an error distance measurement between a synthetic signal defined by each test path being considered and the appropriate speech signal by optimizing a scaling factor of the synthetic signal. The encoding method achieves a significant reduction in computational complexity with minimal loss of performance.