description.txt

一个很好用的窗函数生成工具

After struggling with Matlab's window display tool (wintool), I found it cumbersome and limited. I wanted a way to quickly change window parameters and see the effect on the time and frequency shapes and the most common window measures (scalloping and processing loss, frequency resolution, and equivalent noise bandwidth). I couldn't modify wintool for my taste since most of the code was hidden (pcode). So I wrote winplt.m to create a more useable gui for displaying window time and frequency shapes. The selection of windows available is even more extensive than with wintool, and you can even enter your own window coefficients.
Feel free to add features or new windows to winplt. Or if programming is not your thing, email your ideas to me ([e-mail]) and I may incorporate them in the next revision. For a more complete description of the plotting function used by winplt, download plt.zip from the file exchange graphics category. 
You can find many mathematical treatments of FFT windows, but if you want to understand some of the basic ideas without the pages of mind numbing equations, take a look at the included pdf document. (This is a portion of a signal processing talk I gave many years ago.)