Version 1.3 (7.72 MB) by Paul Mennen
Display and design tool for FFT windows - alternative to wintool.m
Updated 11 Apr 2021

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---- winplt.m, winplt.chm, winplt.pdf ----
Struggling with Matlab's FFT 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 usable gui for displaying windows. Winplt is also a tool for designing your own windows by adjusting the kernel coefficients with a slider.

---- plt.m, plt.chm ----
This is a plotting routine called by winplt.m. To find out more about plt I recommend downloading from the file exchange.

---- HarrisIEEE.pdf ----
This is the most cited reference on FFT windows and includes descriptions of most of the windows plotted by winplt.

---- windowsTalk.pdf ----
Most treatmeants of FFT windows are highly mathematical (such as the included Harris paper). But if you want to understand some of the basic ideas without the pages of mind numbing equations, take a look at the this portion of a signal processing talk I gave many years ago.

Feel free to contact me with any of your questions or ideas about winplt. My email address can be found in the help file as well as at the top of any of the .m files.

Cite As

Paul Mennen (2024). winplt (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2020b
Compatible with R12.1 to R2021a
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes

Version 08-Apr-21: Documentation improvements and minor bug fixes

Sorry to those of you who downloaded this yesterday. I had updated all the files except the most important one - winplt.m. Should be fine now however

Greatly enhanced the fft window design features of the program. Also I now have included the famous Harris IEEE windowing paper (which I can do because it is not copyright protected).

Minor updates to remain compatible with the latest version of the plt plotting utility