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:
Jul. 07, 1998
Filed:
Feb. 26, 1996
Applicant:
Inventors:
Anil Wamanrao Ubale, Goleta, CA (US);
Allen Gersho, Goleta, CA (US);
Assignee:
The Regents of the University of California, Oakland, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L / ; G10H / ; H04B / ;
U.S. Cl.
CPC ...
704219 ; 704223 ; 704262 ; 704264 ; 704500 ;
Abstract
A method of digitally compressing speech and music by use of multiple band ('multiband') fixed excitations stored in codebooks. The use of multiband fixed excitations, along with a coupling method for interconnecting the excitation codebooks and adaptive codebooks and for generating the composite excitation signal, improve the long-term and short-term prediction, and the use of voice-music classification allows the coding structure to be adapted to the statistical character of the audio signal.