Lombard voice recognition method and apparatus for recognizing v

Details Lombard voice recognition method and apparatus for recognizing v Lombard voice recognition method and apparatus for recognizing v

1992-02-07

1994-05-17

Fleming, Michael R.

G10L 904

Patent

active

053135555

ABSTRACT:
A Lombard voice recognition method for recognizing a voice input in a noisy background includes a step of matching and a step of warping. The step of matching matches a frequency spectrum of a feature pattern derived from the input voice to a frequency spectrum of a standard pattern. The step of warping warps a lower frequency spectrum of the feature pattern than a lower frequency side with respect to a frequency axis in case that a noise level of the background in higher than a predetermined noise level.

REFERENCES:
patent: 4282403 (1981-08-01), Sakoe
patent: 4737976 (1988-04-01), Borth et al.
patent: 5001761 (1991-03-01), Hattori
Yumi Takizawa and Masahiro Hamada, "Lombard Speech Recognition by Formant-Frequency-Shifted LPC.Cepstrum", pp. 293-296, Nov., 18, 1990.

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