Granted Patent
Utility
US 6,035,270 · App. 09/000,270
Trained artificial neural networks using an imperfect vocal tract model for assessment of speech signal quality
Inventors:
Michael P Hollier, Philip J Sheppard, Philip Gray
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Feb 3, 1998
Inventors
Michael P Hollier
Philip J Sheppard
Philip Gray
Assignee (at issue)
BRITISH TELECOMMUNICATIONS public limited company
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.