42. A portable terminal for recognizing user speech using a comparison of a confidence factor, associated with an analyzed speech input to the terminal, to a threshold, the terminal comprising: a speech recognizer for generating a hypothesis; an adjustment component configured to selectively adjust the threshold; the adjustment component configured to compare the hypothesis, generated by the speech recognizer, to an expected response and, if the comparison is favorable, to adjust the threshold.
42. A portable terminal for recognizing user speech using a comparison of a confidence factor, associated with an analyzed speech input to the terminal, to a threshold, the terminal comprising: a speech recognizer for generating a hypothesis; an adjustment component configured to selectively adjust the threshold; the adjustment component configured to compare the hypothesis, generated by the speech recognizer, to an expected response and, if the comparison is favorable, to adjust the threshold. 45. The terminal of claim 42 wherein the adjustment component is configured to adjust the threshold with a fixed adjustment amount.