改程序的主要功能，是实现fsk的相关解调，通过该程序可以从总体上聊天fsk调制。-Change the program' s main function is to achieve fsk demodulator fsk modulation through the program from the general chat.

这是简易的FSK信号调制，把文件放入matlab的文件库中，通过在matlab的命令窗口直接调用功能函数并运行，可以直接看到仿真结果。-This is a simple FSK signal modulation, the file into Matlab file library, call function directly in the Matlab command window and run the simulation results can be seen directly.

用fdkmod函数画出采用4-FSK调制的0:3的调制信号波形，以及调制信号的频谱图-4-FSK modulation with fdkmod function draw 0:3 modulated signal waveform, and a modulation signal spectrum FIG.