7. The speech recognition system of claim 1 , wherein: the confidence threshold comprises a set of confidence thresholds, the set of confidence thresholds including a first confidence threshold and at least one subsequent confidence threshold that is lower than the first confidence threshold; and the decision controller: determines that none of the text data is associated with the respective confidence level that exceeds the first confidence threshold; and determines whether any text data is associated with the respective confidence level that exceeds the at least one subsequent confidence threshold.
20. The speech recognition system of claim 7 , wherein the at least one subsequent confidence threshold is within a range of 40% to 75%.