A bio-signal related to the impedance between two points 34, 36 on a speaker's skin 32 is monitored while a speech recognition system is trained to recognize a word or utterance. An utterance is identified for retraining when the bio-signal is abov e an upper threshold or below a lower threshold while the recognition system is being train ed to recognize the utterance. The recognition system is retrained to recognize the ut terance when the bio-signal is between the upper and lower thresholds. (FIG. 2)
SPEECH RECOGNITION TRAINING USING BIO-SIGNALS