SOUND SIGNAL RECOGNITION SYSTEM, CONVERSATION CONTROL SYSTEM USING THE SOUND SIGNAL RECOGNITION METHOD, AND CONVERSATION CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sound signal recognition system which recognizes a sound signal correctly and makes a switching operation of an input mode unnecessary, when a sound signal input is a sound signal wherein a speech sound signal section and a DTMF signal section exist mixedly only in a speech sound signal or only in a DTMF signal.;SOLUTION: The sound signal containing either one of the speech sound signal section or the DTMF signal section or both of them is inputted in a sound signal reference and recognition part 200 via a sound signal input part 100. The sound signal is divided into sound signal sections by a sound signal analysis part 210. A reference part 240 refers both a DTMF signal model 220 and a speech sound signal model 230, and performs referring process of the sound signal. A recognition part 260 is provided with a language model 250 containing a word dictionary and grammar rule information, and recognizes the sound signal by using the language model 250 on the basis of reference result of the reference part 240.;COPYRIGHT: (C)2003,JPO