Cross-platform
Available for Mac OS X and Windows XP systems

See It, Hear It
Sound Keys' 32-band adjustable spectrum has an easy-to-use visual interface

Happy Endings
Choose from Instant, Linear or Exponential falloff controls to alter the generated keyframes

What's the Frequency
The adjustable range controls let you choose up to 3 frequency ranges for sampling

Visual interface for audio selection
Sound Keys displays sound as a 32-band adjustable audio spectrum, making it easy to isolate the part of the sound you'd like to use in an animation.

Integrate sound with other effects
Since it is applied as a regular effect within After Effects, Sound Keys can be used to make audio trigger other visual effects. For example, combine Sound Keys with Trapcode Starglow to animate the intensity of light based on a drumbeat.

Multiple instance capability
Create mesmerizing, complex animations by using the same audio track to drive several types of animation, selecting different audio frequencies for each effect.

Home Page - https://www.redgiant.com/products/trapcode-sound-keys/