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the question is as it is in the topic: What is the best spline to interpolate freq analiser graph?

I am looking something simply and fast to implement. I read about catmull-rom it looks it could be good, but as I understand it needs 4 points to be defined. But I think in my case the best would be something that requires only 3 points defined (3 points for each freq bin). Is that possible at all?

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  • $\begingroup$ I think you should include some example images of what you want. $\endgroup$ – Martin Apr 28 '18 at 21:12
  • $\begingroup$ for example like that: Voxengo SPAN $\endgroup$ – pajczur Apr 29 '18 at 1:08

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