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Need help animating light intensity to audio

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Brian East
Need help animating light intensity to audio
on Oct 14, 2014 at 2:19:49 am

I am working on a project for my church and we want to have a lighted ball pulse to a voice clip. Any ideas on the most efficient way to get the pulse intensity linked to the audio to make it seem the ball is talking?

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James Huenergardt
Re: animating light intensity to audio
on Oct 14, 2014 at 6:34:26 pm

OK, what you can do is something like this.

For your audio layer, convert audio to keyframes.
Right click, Keyframe Assistant, Convert Audio to Keyframes.

Then, create a solid and make it 3D.
Next, create a point light and move it out in Z-space so it only illuminates the center of the solid.

Next, create an expression for the Light Intensity that uses the linear function.

Something like this:
linear(thisComp.layer("Audio Amplitude").effect("Left Channel")("Slider"),0,10,25,100);

Where thisComp.layer("Audio Amplitude").effect("Left Channel" is one of the audio channels that's been keyframed.

The Audio Amplitude is a null that the keyframes have been applied to.

Play with that and you should be on your way.

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