30. An information access system according to claim 1 wherein the central system further includes an authoring system which produces phonetic signal information from information relating to the document and stores the phonetic signal information at the database.
30. An information access system according to claim 1 wherein the central system further includes an authoring system which produces phonetic signal information from information relating to the document and stores the phonetic signal information at the database. 33. An information access system according to claim 30 wherein the authoring system further includes analyzing means for analyzing the document text data and generating phonetic signal information based on the analysis results.