利用MATLAB对DTMF信号的产生与检测进行模拟仿真，检测端采用Goertzel算法-Use MATLAB to generate DTMF signals for simulation and testing, testing client using Goertzel algorithm

电话智能遥控器主要包括电话振铃检测电路，电话自动摘机和挂机电路，DTMF信号解码电路，语音提示急电路，音频放大电路，以及控制心脏CPU电路-Telephone remote control including smart phones ringing detection circuit, telephone and hang up automatically pick circuit, DTMF signal decoding circuit, urgent voice circuits, au