Method for verifying identity or difference by voice

Details Method for verifying identity or difference by voice Method for verifying identity or difference by voice

1976-11-29

1977-10-18

Claffy, Kathleen H.

G10L 104

Patent

active

040547493

ABSTRACT:
In a voice verification system, voice parameters which are highly characteristic of particular voices but have only a limited effectiveness life time (such as pitch) are used. The lifetime or similar time indication is recorded along with the original record of the characteristic parameter. At the time of verification, if the lifetime has been exceeded no verification is made. On the other hand if the lifetime of the recorded characteristic parameter has not been exceeded a verification is made. If the verification is positive the newly obtained characteristic parameter is substituted for the originally recorded parameter and the lifetime begins anew.

REFERENCES:
patent: 3852535 (1974-12-01), Zurcher
patent: 3896266 (1975-07-01), Waterbury

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