中文说明：可实现FFT功能的MATLAB源代码，具有应用背景，也可方便初学者学习FFT的原理及实践-FFT function can be realized MATLAB source code, with the application of the background can also be convenient for beginners to learn and practice the principles of FFT
English Description：
FFT function can be realized MATLAB source code, with the application of the background can also be convenient for beginners to learn and practice the principles of FFT