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Blender 2.49 Scripting by Michel J. Anders

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Get down with the beat—syncing shape keys to sound

Many a rock video today features an animation of speaker cones reverberating with the sound of the music. And although the features for the manipulation of sound in the Blender API are rather sparse, we will see that this effect is rather simple to achieve.

The animation that we will construct depends mainly on the manipulation of shape keys. Shape keys can be understood as distortions of a base mesh. A mesh can have many of these distortions and each of them is given a distinct name. The fun part is that Blender provides us with the possibility to interpolate between the base shape and any of the distorted shapes in a continuous way, even allowing us to mix contributions from different shapes. ...

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