Abstract: Preparation of Braille books and audio books by man has a problem that a great deal of costs including the work cost for recitation or translation (printing) of Braille, composition, examination and the like and the distribution cost are required as compared with general books. Further, there is a problem that books that visually handicapped people wish to read cannot be delivered immediately at an inexpensive price. The user (reader) himself participates in editing or correction in processing for producing an audio book which reads an electronic book aloud using the speech synthesis technique and pronunciation symbol text constituting the basis of the audio book to thereby reduce the cost required for the production processing of the audio book and the pronunciation symbol text and improve the quality of the audio book and the pronunciation symbol text.