Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent
1992-11-25
1994-11-15
Brown, Thomas W.
Telephonic communications
Audio message storage, retrieval, or synthesis
Multilingual system or operation
379189, 379199, 381 42, 381 43, G10L 908, H04M 166
Patent
active
053655745
ABSTRACT:
A method for enabling a caller to obtain access to one or more services via a telephone network by speaking a password is described. The method begins by establishing at least one predetermined threshold value for a speaker verification signal. For each spoken character of the password, the method generates a set of parameters using a voice verification feature transformation. After entry and recognition of the password, the sets of parameters are used to generate a speaker verification signal for the password. Upon the occurrence of a predetermined call condition, the predetermined threshold value is adjusted to increase the level of security in the verification algorithm. If the signal verification signal for the password has a predetermined relationship with respect to the adjusted threshold value, the caller's identity is accepted. If not, the caller may be asked to answer certain personal questions before his or her identity is accepted.
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Hunt Alan K.
Schalk Thomas B.
Brown Thomas W.
Judson David H.
VCS Industries, Inc.
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