14. Apparatus as defined by claim 13 further comprising means for time normalizing the training word matrices and the command word matrix before the comparisons thereof.
14. Apparatus as defined by claim 13 further comprising means for time normalizing the training word matrices and the command word matrix before the comparisons thereof. 15. Apparatus as defined by claim 14 wherein said means for time normalizing divides each training word and the command word into a predetermined number of time slots of substantially equal duration.