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DTMF SIGNAL IDENTIFICATION DEVICE, DTMF SIGNAL IDENTIFICATION METHOD, DTMF SIGNAL IDENTIFICATION PROGRAM, AND DTMF SIGNAL IDENTIFICATION SYSTEM
DTMF SIGNAL IDENTIFICATION DEVICE, DTMF SIGNAL IDENTIFICATION METHOD, DTMF SIGNAL IDENTIFICATION PROGRAM, AND DTMF SIGNAL IDENTIFICATION SYSTEM
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机译：DTMF信号识别装置，DTMF信号识别方法，DTMF信号识别程序和DTMF信号识别系统
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摘要
PROBLEM TO BE SOLVED: To provide a preferable method for DTMF signal identification at a mobile terminal.;SOLUTION: A DTMF identification device includes a communication part 4 for receiving an audio signal through a communication channel, an amplifier 5 for amplifying an audio signal, a speaker 6 for outputting sound obtained by amplifying an audio signal by the amplifier 5, a microphone 7 for accepting input sound outputted by the speaker 6, and an identification part 23 for identifying a type of an input DTMF signal contained in sound inputted from the microphone 7. The DTMF signal identification device further provides a pattern information storage part 10 for storing pattern information, indicating feature of each of DTMF signal types, associating with types of DTMF signal. The identification part 23 can also identifying a type of the input DTMF signal, based on a waveform of an audio signal inputted from the microphone and pattern information stored in the pattern information storage part 10.;COPYRIGHT: (C)2016,JPO&INPIT
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