A method for performance evaluation of the acoustic-phonetic front end of a continuous speech recognition system, using the entropy of its output, is described. Results are given for a front end based on phonemic hidden Markov models, with various optional enhancements which have been optimised using the entropy criterion.
Bibliographic reference. McInnes, Fergus R. / Ariki, Y. / Wrench, Alan A. (1989): "Enhancement and optimisation of a speech recognition front end based on hidden Markov models", In EUROSPEECH-1989, 2461-2464.