解码程序,用于对低频信号进行去噪解码处理，抗造性能强-Decoding process for the low-frequency signal de-noising decoding process, strong anti-created performance

DTMF 系统的matlab实现，发送电话11位电话号码在接收端识别。-DTMF system matlab realize, send telephone 11 telephone numbers identified on the receiving end