Speech dialogue system for realizing improved communication betw

Details Speech dialogue system for realizing improved communication betw Speech dialogue system for realizing improved communication betw

1992-08-13

1996-08-20

Knepper, David D.

395 235, 395 265, G10L 506, G10L 914, G10L 302

Patent

active

055486819

ABSTRACT:
In the system, a speech input uttered by a human is received by a microphone which outputs microphone output signals. The speech input received by the microphone is then recognized by a speech recognition unit, and a synthetic speech response appropriate for the speech input recognized by the speech recognition unit is generated and outputted from a loudspeaker to the human. In recognizing the speech input, the speech recognition unit receives input signals in which the synthetic speech response, outputted from the loudspeaker and then received by the microphone, is cancelled from the microphone output signals.

REFERENCES:
patent: 4852181 (1989-07-01), Morito et al.
patent: 4905288 (1990-02-01), Gerson et al.
patent: 4937871 (1990-06-01), Hattori
Widrow et al., "Adaptive Noise Cancelling: Principles and Applications, "Proceeding of the IEEE, vol. 63, No. 12, Dec 1975, pp. 1692-1716.
McAulay, "Optimum Speech Classification and its Application to Adaptive Noise cancellation," IEEE ICASSP, May 1977, pp. 425-428.

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