Display Audio Analysis and levels with objects

I am trying to create a simple script that would raise or lower the height of an object based on the volume level of the peak and lows analysis of an audio file. For example if I were trying to make a three band equalizer out of long and short cubes. Could someone point me in the right direction.

What I would like to do is detect low, medium, and high volumes and make the objects active or deactivated based on those detections.

I have no starting script and I think I need to start with being able to read these levels. Thanks in advance.