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:
Feb. 13, 2007
Filed:
Oct. 22, 2002
Marc A. Boillot, Plantation, FL (US);
John G. Harris, Gainesville, FL (US);
Thomas L. Reinke, Gainesville, FL (US);
Zaffer S. Merchant, Parkland, FL (US);
Jaime A. Borras, Hialeah, FL (US);
Marc A. Boillot, Plantation, FL (US);
John G. Harris, Gainesville, FL (US);
Thomas L. Reinke, Gainesville, FL (US);
Zaffer S. Merchant, Parkland, FL (US);
Jaime A. Borras, Hialeah, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Human hearing perceives loudness based on critical bands corresponding to different frequency ranges. As a sound's frequency spectrum increases beyond a critical band into a previously unexcited critical band, the perception is that the sound has increased in loudness. To take advantage of this principle, a filter is applied to a speech signal so as to expand the formant bandwidths of formants in the speech sample.