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Just working my way through this tutorial . . . Got to about 5.55 in the video and hit a snag.

My soundfile loads into the graph editor, but instead of appearing as a series of curves, it shows up as collection of squared-off straight lines.

enter image description here

Here are the import settings:

enter image description here

. . . and .blend file.

Anybody know what gives?

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  • $\begingroup$ It depends on your audio file. spikes are made when the pitch is different. Try to use another sound file to get spikey curves. $\endgroup$
    – Ali Jibran
    Commented May 9, 2014 at 13:00
  • $\begingroup$ This question (and its answer) are valuable. Closing it for reasons of being "off-topic" is just wrong. $\endgroup$
    – BlenderBender
    Commented Mar 27, 2017 at 11:18

2 Answers 2

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The issue was that in setting up the custom property 'Sound'. In the video, the tutor enters '0.0' into the Property Value. I didn't notice the decimal and entered '0', thus switching the property to 'integer' instead of the desired 'float'.

I removed the keyframes from the Sound property, edited the Property Value to '0.0', added a keyframe and reimported the sound (bake sound to fcurve).

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  • $\begingroup$ For some reason, your solution didn't work for me initially. However after restarting Blender, I could reproduce the error and your solution worked. $\endgroup$
    – BlenderBender
    Commented Mar 27, 2017 at 11:29
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You should use first a AudioEditor like Audacity to see if your sound's wave is squared, or maybe it coul be that you are using "Constant" intropolation mode.

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    $\begingroup$ You can't change the interpolation after baking from audio. $\endgroup$
    – gandalf3
    Commented May 9, 2014 at 23:53

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