6. A method of causing a computer to combine a processing of a document having a plurality of pages with a processing of speech generated with reference to the document, comprising the steps of: receiving presentation text and its attributes from the document; storing the presentation text and the attributes on a page-by-page basis, wherein said attributes comprise a title, character size, character underlining, or boldface character; decomposing the presentation text into words; storing the words in a word attribute database; extracting the words and their attributes from the word attribute database; accessing a keyword database; extracting the keywords that are common in the document; assigns weight to the keywords depending on a number of times the keyword appeared as the voice in the presentation and their attributes; recognizing the speech in the presentation in consultation with a dictionary database by: acquiring correspondence between a lapse of time from a start of the presentation and a result of speech recognition every moment, storing a correspondence between the time and the result of speech recognition in a subtitle database; accessing a page-time database that records a time that the page is turned and a time when the next page is turned, and calculates the weight of the keywords in the page based on a duration during which the page in question is displayed in the presentation; specifying the page corresponding to the result of voice recognition on the basis of the time information; wherein the computer determines, among subtitles obtained by recognizing the speech, a specific subtitle obtained by recognizing speech generated with reference to a specific page of the document by: deriving a correspondence between the time and the result of speech recognition from the subtitle database, and displaying it on a subtitle candidate display region; and causing keywords stored in the keyword database, presentation text stored in the text attribute database, and a master subtitle stored in a master subtitle database to cooperate together for display; and generating speaker notes from subtitles stored in the subtitle database.
6. A method of causing a computer to combine a processing of a document having a plurality of pages with a processing of speech generated with reference to the document, comprising the steps of: receiving presentation text and its attributes from the document; storing the presentation text and the attributes on a page-by-page basis, wherein said attributes comprise a title, character size, character underlining, or boldface character; decomposing the presentation text into words; storing the words in a word attribute database; extracting the words and their attributes from the word attribute database; accessing a keyword database; extracting the keywords that are common in the document; assigns weight to the keywords depending on a number of times the keyword appeared as the voice in the presentation and their attributes; recognizing the speech in the presentation in consultation with a dictionary database by: acquiring correspondence between a lapse of time from a start of the presentation and a result of speech recognition every moment, storing a correspondence between the time and the result of speech recognition in a subtitle database; accessing a page-time database that records a time that the page is turned and a time when the next page is turned, and calculates the weight of the keywords in the page based on a duration during which the page in question is displayed in the presentation; specifying the page corresponding to the result of voice recognition on the basis of the time information; wherein the computer determines, among subtitles obtained by recognizing the speech, a specific subtitle obtained by recognizing speech generated with reference to a specific page of the document by: deriving a correspondence between the time and the result of speech recognition from the subtitle database, and displaying it on a subtitle candidate display region; and causing keywords stored in the keyword database, presentation text stored in the text attribute database, and a master subtitle stored in a master subtitle database to cooperate together for display; and generating speaker notes from subtitles stored in the subtitle database. 10. The method of claim 6 , further comprising the step of causing the computer to embed the specific subtitle in the specific page of the document.