Mark Tatham is Professor in the Department of Language and Linguistics at the University of Essex. He researches the theory of the production and perception of speech within the general theory of linguistics. He has taught phonology, computational modelling, and speech aspects of neuro-psychology at the University of California and the University of Ohio. Katherine Morton is a Fellow in the Department of Language and Linguistics at the University of Essex. She has published research in modelling speech production and perception within the overall framework of human communication, constr...