Audio Reactive Patch
If we want to create an audio reactive patch we activate the VL.Audio package in the node browser and use the AudioIn to get the sound into the patch. We the want to convert the Stereo to a single channel with ToMono. We then can convert the FFT of the audio signal.
After that we convert the information into a spread with the FromSequence(Spread) node and select with GetSpread(Spread) which part of the frequency range we want to use and how much.
The Average node then gives us a single value that we can smoothen with a Damper and plug into logic or parameter that we want to change by the audio.
You also can use Randomizer after the GetSpread to create a random order of the elements in the spread.