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Doesn't use a window function #1

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hexafluoride opened this Issue May 19, 2017 · 1 comment

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hexafluoride commented May 19, 2017

http://www.katjaas.nl/FFTwindow/FFTwindow.html
This article explains why it's important to use a window function when performing a FFT(and goes way over my head while doing it).

@le1ca

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le1ca commented May 19, 2017

I implemented a Hann window with 4x overlap and it looks like it did a pretty good job at reducing spectral leakage:

Comparison of unwindowed vs windowed DFT

The left is the original unwindowed result, the right is windowed.

@le1ca le1ca closed this in 86a1944 May 19, 2017

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