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. 22, 2011
Filed:
Jun. 04, 2007
Applicants:
Rajeev Nongpiur, Vancouver, CA;
Phillip A. Hetherington, Port Moody, CA;
Inventors:
Rajeev Nongpiur, Vancouver, CA;
Phillip A. Hetherington, Port Moody, CA;
Assignee:
QNX Software Systems Co., Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system extends the high-frequency spectrum of a narrow band audio signal in the time domain. The system extends the harmonics of vowels by introducing a non linearity in a narrow band signal. Extended consonants are generated by a random-noise generator. The system differentiates the vowels from the consonants by exploiting predetermined features of a speech signal.