SynthMaker

FFT display for pure sine waves

Archive · 2012 2 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

rocko ·

Hi,

I'm trying to create an FFT display which is accurate for both pure sine wave tones and music.

The stock "FFT display" provided by SM outputs a very wide output for a pure sine wave, which, as far as I understand comes from the fact that it does not use any windowing (Hanning, blackman, etc.) for the FFT.

Here is an example (pure sine wave at input):

Am I correct? Is this just a matter of sindowing? If so, should I just rewrite the "Graph FF" primitve to one that includes the window of choice? Any other idea?

martinvicanek ·

There is a thread on Windowed FFT, please check the latest post there.

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