circular FFT

August 1, 2020   

The fast-fourier-transformation is a common method of converting the raw audio signal into a frequency spectrum. The spectrum is usually displayed in a linear fashion, but I wanted to see what it would look like if I arranged the spectrum into a spiral so that the names of the corresponding notes are aligned at certain angles.

The below is a simple javascript App that demonstrates this idea. You can sing to your microphone, or whistle if you want a sharp peaks.



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