Digital Sound Corporation

Xiao-Ling Zhang

Jan Vanderford

R Anthony Bladon

David Trandal

David Brahm

A voice controlled voice-messaging systems permits manipulation of voice messages over the telephone without the need for keypressed commands. Manipulation includes playback of messages, deletion of messages, saving messages, and sending a new message to a recipient from a user-defined list. Access to the messaging system is by spoken password. Voice input also allows the following functions: enrollment of a spoken password; granting or refusing user access to the system based on verification of the user speaking a password; recognition of spoken utterances of 'yes' and 'no' in response to prompts by the VMS; recognition of 'stop' to interrupt and stop a voice message during playback; enrollment of a spoken personal directory of names of potential message recipients; and recognition of names in the spoken personal directory. The invention uses speaker verification, speaker-independent recognition (SIR) of 'yes/no', speaker-independent recognition of 'stop' during message playback, and speaker-dependent recognition (SDR) of a limited vocabulary of short phrases such as a list of message recipients' names.

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Goleta, CA, United States of America

Xiao-Ling Zhang