Method of verifying a speaker

Details Method of verifying a speaker Method of verifying a speaker

1979-10-09

1981-09-29

Nusbaum, Mark E.

Communications: electrical

Land vehicle alarms or indicators

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

3401463FT, G10L 100

Patent

active

042924715

ABSTRACT:
An improved method of verifying the speaker from whom long term spectral characteristics have been derived during a learning phase. Mean values and distance thresholds have been calculated and stored. Improved recognition is obtained by incorporating into the stored values additional values of speech samples in ranges situated outside the distance threshold value. When, during verification, a speech sample not situated within the distance threshold value is encountered its distance from the additionally stored speech samples is successively determined and compared with the separate distance threshold value. The speaker is rejected only if the speech sample to be verified is not situated at a sufficiently small distance from any of the additionally stored speech samples. The method thus increases the recognition range to better approximate the actual distribution of speech samples of the learning phase.

REFERENCES:
patent: 3582559 (1971-06-01), Hitchcock et al.
patent: 4053710 (1977-10-01), Advani et al.
patent: 4060694 (1977-11-01), Suzuki et al.
patent: 4078154 (1978-03-01), Suzuki et al.

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