Voice verification system based on word pronunciation

Details Voice verification system based on word pronunciation Voice verification system based on word pronunciation

1976-12-13

1978-07-11

Brown, Thomas W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

179 1SD, 3401463T, G10L 100, G06F 1534

Patent

active

041003705

ABSTRACT:
This system verifies the voice of a specific speaker (A) through verification of vocal sounds which form a previously-recorded recognition phrase spoken by A and others. Parallel filters derive a spectral characteristic parameter x.sub.i which contains weighting factors .alpha..sub.i, .beta..sub.i, and which represents a corresponding vocal sound x.sub.i. Improved specificity over other speakers is attained by a Characteristic Feature Extractor which varies .alpha..sub.i, .beta..sub.i, through p different values, thus deriving a set of p parameters (x.sub.ik) for each vocal sound x.sub.i, thus allowing emphasis of the specific vocal sound x.sub.i as spoken by a specific speaker, over that of competing sounds and speakers.

REFERENCES:
patent: 3275986 (1966-09-01), Dunn
patent: 3319229 (1967-05-01), Fuhr et al.
patent: 3457552 (1969-07-01), Asendorf
patent: 3634822 (1972-01-01), Chow
patent: 3770892 (1973-11-01), Clapper
patent: 3816722 (1974-06-01), Sakoe
patent: 3950733 (1976-04-01), Cooper

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