实现函数信号发生器功能 可采用调频、调幅等方式对信号调制并有图形。复制和频率在一定范围内连续可调。-Function can be used to achieve the function signal generator FM, AM, etc. on the signal modulation and a graphic. Copy and frequency adjustable within a certain range.

FM信号仿真代码详解，有关信噪比与FFT的变换(FM signal simulation, signal to noise ratio, FFT)