AVR mega16单片机上实现FSK和DTMF解码的程序，信号由AD 7.2K采样，是可用的，但具体使用时需要根据硬件条件对参数略作调整。-mega16 achieve FSK and DTMF decoder procedures, AD 7.2K signal from the sample is available, but the specific use of the hardware required under the right conditions parameters sl