Robert S Wohlsen, 76Santa Rosa, CA

6978238, Dec 20, 2005

Jul 12, 1999

09/351723

Robert C Wohlsen - Menlo Park CA, US
Sue McNeill - Mendocino CA, US

G10L017/00

704246, 704273

A method and apparatus identifies a caller as a user in a group of users. An enrollment process extracts a grammar of the user's password and a voiceprint of the user's password and name. A caller may identify himself as a user by speaking his name. The name is recognized and a number of users having a name most closely matching the name spoken is identified using voice recognition techniques. The caller then speaks his password and the grammar is identified that most closely matches the grammars of the passwords corresponding to the users identified from the spoken name. A voiceprint is extracted from the name and grammar spoken by the caller, and if the voiceprint matches the voiceprint extracted for the user identified using the grammar during that user's enrollment process, the caller is identified as that user.

6681205, Jan 20, 2004

Dec 17, 1999

09/466418

Michelle San Martin - San Francisco CA
Robert C Wohlsen - Menlo Park CA
Cecily Baptist - Concord CA

Charles Schwab Co., Inc. - San Francisco CA

G10L 1506

704243, 704273

A method and apparatus enrolls a user for voice recognition by prompting the user to speak a social security number or other number. A voiceprint is extracted from the social security number. Additional sequences of numbers are generated so that the total number of times each decimal digit appears in the social security number or the additional sequences meets or exceeds a threshold value. The user is then prompted to speak the additional sequences and the voiceprint extracted from the social security number is refined to include the additional information received from the responses to the prompts for the sequences. A standard sequence may also be prompted and a voiceprint of the standard sequence compared with the voiceprints of other users speaking the same standard sequence to identify the level of differentiation between the users voice and other users voices. If the comparison determines the level of differentiation is low, the user may be prompted to speak his or her social security number again and/or the same or additional sequences and the users voiceprint further refined from these additional responses.