Method and apparatus for automation of directory assistance...

Details Method and apparatus for automation of directory assistance... Method and apparatus for automation of directory assistance...

H - Electricity

04

M

H04M 3/60 (2006.01) H04M 3/42 (2006.01) H04M 3/493 (2006.01)

Patent

CA 2091658

Abstract In a telecommunication system, automatic directory assistance uses a voice processing unit comprising a database of vocabulary items and data representing a predetermined relationship between each vocabulary item and a calling number in a location served by the automated directory assistance apparatus. The voice processing unit issues messages to a caller making a directory assistance call to prompt the caller to utter a required one of said vocabulary items. The unit detects a calling number originating a directory assistance call and, responsive to the calling number and the relationship data computes a probability index representing the likelihood of a vocabulary item being the subject of the directory assistance call. The unit employs a speech recognizer to recognize, on the basis of the acoustics of the caller's utterance and the probability index, a vocabulary item corresponding to that uttered by the caller. 24

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