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:
Apr. 15, 2008
Filed:
Jan. 12, 2007
Applicants:
Jayesh S. Patel, Lowell, MA (US);
Douglas E. Kolb, Bedford, MA (US);
Inventors:
Jayesh S. Patel, Lowell, MA (US);
Douglas E. Kolb, Bedford, MA (US);
Assignee:
Tellabs Operations, Inc., Naperville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for reducing the complexity of linear prediction analysis-by synthesis (LPAS) speech coders. The speech coder includes a multi-tap pitch predictor having various parameters and utilizing an adaptive codebook subdivided into at least a first vector codebook and a second vector codebook. The pitch predictor removes certain redundancies in a subject speech signal and vector quantizes the pitch predictor parameters.