用FFT分析周期矩形脉冲及其频谱, 这是计算周期矩形脉冲双边频谱的程序。-using FFT analysis cycle and rectangular pulse spectrum, which is calculated cycle rectangular pulse spectrum of bilateral procedures.

1.利用MATLAB分析非周期信号的频谱 2.观察信号频谱变化验证傅里叶变换性质(1. Analysis of the spectrum of non periodic signals by MATLAB 2. Observe the spectrum change of the signal to verify the Fourier transform property.)