Here's another spectrum plug I made using a different approach. Unfortunately this is even less accurate, but it looks fun and is useful as a visualizer. Here I have the "Calculate Amplitude for Frequencies" set to "quadratic", which arranges the bin values decently enough that they can be processed in an even row (In the previous composition I spaced the bins exponentially). With the bins spaced linearly they can then be processed as scalable rectangle layers. If anyone knows a good way of taking the bins and then reprocessing them into more accurate data then please let me know.
This is a frequency spectrum I made for VJ use, particularly in Resolume. My aim was to make a spectrum that would be fun to watch mostly, rather than being super accurate. I think it makes a good base source and then you can add effects from there, ie colours, feedback etc.
This composition outputs a device element from a list, with a separate control panel window for moving forward and backward in the device list. It currently uses List HIDs, but can be swapped out with List MIDI Devices, List OSC Devices, etc.