Methods and apparatus for activating telephone services in response to speech are described. A directory including names is maintained for each customer. A speaker dependent speech template and a telephone number for each name, is maintained as part of each customer's directory. Speaker independent speech templates are used for recognizing commands. The present invention has the advantage of permitting a customer to place a call by speaking a person's name which serves as a destination identifier without having to speak an additional command or steering word to place the call. This is achieved by treating the receipt of a spoken name in the absence of a command as an implicit command to place a call. Explicit speaker independent commands are used to invoke features or services other than call placement. Speaker independent and speaker dependent speech recognition are performed on a customer's speech in parallel. An arbiter is used to decide which function or service should be performed when an apparent conflict arises as a result of both the speaker dependent and speaker independent speech recognition step outputs. Stochastic grammars, word spotting and/or out-of-vocabulary rejection are used as part of the speech recognition process to provide a user friendly interface which permits the use of spontaneous speech. Voice verification is performed on a selective basis where security is of concern.

Title
Methods and apparatus for performing speaker independent recognition of commands in parallel with speaker dependent recognition of names, words or phrases
Application Number
9/505103
Publication Number
RE38101 (E1)
Application Date
February 16, 2000
Publication Date
April 29, 2003
Inventor
Jayant M Naik
Stamford
CT, US
Vijay R Raman
Pleasanton
CA, US
David M Lubensky
Danbury
CT, US
Ayman O Asadi
Laguna Niguel
CA, US
George J Vysotsky
Riverdale
NY, US
Agent
Michael P Straub
US
Loren C Swingle
US
Leonard C Suchyta
US
Assignee
Telesector Resources Group
NY, US
IPC
G10L 9/08
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