Ok, I have several scaling animations synced to audio via "Bake sound to f curves" and I've applied an envelope modifier to control the max value the curve can hit. The curve looks like this -

enter image description here

This results in a pretty jumpy animation due to the jagged nature of the line or maybe the easing of the curve itself. Tried changing interpolation mode but this did nothing.

How can I smooth out the animation produced by "bake sound to f curves" ? Is this addon relevant How to change timing of my mocap BVH and how to optimize keyframes ? Or is it in the easing settings?

  • 1
    $\begingroup$ it's always tricky to do anything with baked curves. check this answer: blender.stackexchange.com/questions/19357/… $\endgroup$
    – pevinkinel
    Commented Sep 21, 2020 at 13:17
  • $\begingroup$ @wilks perfect, this works. My only issue is I dont know how to apply my f curve modifiers before I unbake the curve $\endgroup$
    – blue
    Commented Sep 21, 2020 at 20:44
  • $\begingroup$ then i think you need to apply the f-curve modifiers with Bake Curve (Alt+C) then delete the modifiers, then unbake. but might be better to add your modifiers as the last step instead, that would give you more flexibility later $\endgroup$
    – pevinkinel
    Commented Sep 21, 2020 at 23:14

1 Answer 1


I have two solutions, one requiring an external program.

  1. Smooth the source WAV in Audacity before baking. How to smooth it will depend on what sounds you're trying to extract. I recommend narrowing it to a freq range with a combination of high pass and low pass (or Graphic EQ, put all ranges to 0 except the ones you want, and maybe give those a bit of a 'curve' with neighbouring frequencies so you get ramping.
  2. Or you can just un-bake curve in Blender and then press ⎇ Alt O to smooth.

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