利用VC6.0完成的DTMF码的识别.对按键的声音数据利用格策尔算法进行频率识别,进而预测出所按的按钮的位置.-VC6.0 completed using DTMF identification code. The voice of key data on the use of Goertzel algorithm frequency identification, and then predict the location of the button press.