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

用matlab对duffing方程进行求解，duffing方程是混沌算法的主要分支之一，具有效果较为良好的微弱信号检测功能。-Duffing equation is solved using matlab Duffing equation is one of the main branches of the chaotic algorithm with a the effect weak signal detection function.

使用MATLAB软件编程，对信号进行迫零检测，并输出信号误码率曲线-use the MATLAB to detect the ber of zf