Tuesday, March 23, 2010 at 2:19PM 
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Linking Trapcode Sound Keys to Particular is a lot of fun!
This example shows linking the output of Sound Keys to Trapcode Particular's Particles/sec paramter. The effect is that on each kick drum beat, particles are emitted. Note that you need some base to properly hear the kick drum, a laptop may not provide enough base.
Download AE6 project file: beat_explode.zip (1.2M)
Tuesday, March 23, 2010 at 2:09PM 
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Sound Keys was first used to extract three separate streams from the base region of the audio spectrum. Then three instances 3D Stroke was used to create the "strings". Each has an animated path that describes a vibrating string. 3D Stroke's Path Time, found under Advanced, was used to control the movement of the strings. Each has an expression where a sine function describes the general movement of the string and this is then multiplied by the stream extracted by Sound Keys so that the strings appear to vibrate with their corresponding base frequency.
Download AE 5.0 AEP
Download AE CS4 AEP
Tuesday, March 23, 2010 at 2:00PM 
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Trapcode Sound Keys - Fallof None example (advanced)
This example shows the Falloff None (integrate) mode where the output signal is integrated over time to form an ever-growing signal. In this example the ouput from Sound Keys was used to set the X position of the small white circle. By using the Falloff None (integrate) mode the circle appears to be pushed ahead by the beat. When there is no beat, the circle just stands still. Trails by AE Echo (AE built-in effect).
Wednesday, March 17, 2010 at 3:07PM 
Nine comps of animated northern lights using AE's built-in Fractal Noise and Trapcode Shine. Trapcode Particular used for the stars. Resurrected from trapcode-people.
Download AE 6.0 AEP
Description: Fractal Noise is used on the bottom layer to create the base for the effect. It has keyframes on "Evolution" which means it will change shape over time. Switch off all layers above it to see how it looks. Above that is a colorization layer that uses Colorama (built-in AE effect) to generate the color gradient. Then a mask is applied. Trapcode Shine is used in an adjustment layer above to create the look of light rays / northern lights. For finish, a starfield is added on top and then the layer with trees.
