“…Work on automatic input of spoken language to a computer, generally called.' speech recognition', has met with limited success, in that at present speech recognition systems can deal with only a very limited vocabulary, and have only recently begun to deal with connected speech (Doddington & Shalk, 1981;Bridle, Brown & Chamberlain, 1983;Peckham, Green, Canning & Stephens, 1983;Wilson, 1983). The speech generation process (generally called 'speech synthesis') is, however, much more successful, and systems which construct answers to queries (e.g.…”