1. A speech recognition device for accurate transformation of acoustic utterances into text, the speech recognition device comprising: an acoustic sensor configured to receive one or more acoustic utterances; one or more memory devices configured to receive and store a set of one or more acoustic models having trained one or more confidence classifiers and to store one or more acceptance metrics defining at least one recognition acceptance condition; automatic speech recognition circuitry including at least one processor unit for executing confidence classifier circuitry, the confidence classifier circuitry being configured to generate a first speech recognition confidence classifier score corresponding to the one or more received acoustic utterances and recognized text based on a first confidence classifier and to generate a second speech recognition confidence classifier score corresponding to the one or more received acoustic utterances and the recognized text based on a second confidence classifier; normalization circuitry connected to the automatic speech recognition circuitry to receive the first and second speech recognition confidence classifier scores from the confidence classifier circuitry and to map a distribution within an output range of the second confidence classifier to a distribution within an output range of the first confidence classifier, the mapped distribution including a mapped speech recognition confidence classifier score for the second confidence classifier that more accurately satisfies the recognition acceptance condition than a corresponding score from the first confidence classifier; and a text output interface connected to receive new recognized text from the automatic speech recognition circuitry for a newly-received acoustic utterance and to output a signal representing the new recognized text as accepted text responsive to a determination that a mapped speech recognition confidence classifier score of the second confidence classifier for the newly-received acoustic utterance satisfies the recognition acceptance condition.