Granted Patent
Utility
US 6,507,814 · App. 09/154,654
Pitch determination using speech classification and prior pitch estimation
Inventor:
Yang Gao
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Sep 18, 1998
Inventor
Yang Gao
Assignee (at issue)
Conexant Systems, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.