Granted Patent
Utility
US 6,606,595 · App. 09/652,398
HMM-based echo model for noise cancellation avoiding the problem of false triggers
Inventors:
Rathinavelu Chengalvarayan, Richard Harry Ketchum, Anand Rangaswamy Setlur, David Thomson
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Aug 31, 2000
Inventors
Rathinavelu Chengalvarayan
Richard Harry Ketchum
Anand Rangaswamy Setlur
David Thomson
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.