1. A method of automated speech recognition in a vehicle, the method comprising the steps of: (a) receiving audio in the vehicle; (b) pre-processing the received audio to generate acoustic feature vectors; (c) decoding the generated acoustic feature vectors to produce at least one speech hypothesis; (d) post-processing the at least one speech hypothesis using pitch to improve speech recognition accuracy, including rejecting the speech hypothesis if pitch is not detected in the received audio and accepting the speech hypothesis when the speech hypothesis is identified as having a syllable count equal to pitch count.