Descr iption: This M-file plots the truncated Fourier Series representation of a square wave as well as its amplitude and phase spectrum.- Descr iption: This M-file plots the truncated Fourier Series representation of a squa

傅里叶展开中吉布斯效应，可修改级数，观察曲线(gibbs effect in Fourier series, you can change the Fourier series, and observe how the lines change.)