It started as a de-esser patch, but quickly involved into this (thanks Michael).
The audio is cut in thee bands, and in each band sits an EQ band.
The low and high band have a shelve EQ, the mid band is a bell shape.
The gain of each of these EQs is controlled by the level of the audio you are running through the patch.
You can adjust the crossover of the bands and the amount of gain (positive or negative) you want to apply on each band. The louder the audio in one band the more the EQ will work.
How does it work:
First you have an Input and Output level knob at the top left and right. EQ boosts need to be reigned in, or the input needs to get boosted to push the dynamic stages a bit more.
Next you find the crossover setup at the top. As they are crossovers, they affect 2 adjacent bands. You will see any adjustment on the frequency knobs in each band. The mid band is set half way between low and high shelve.
Each band has a Q and a Gain setting. Here the Gain is called Initial Gain, as this is a fixed setting. That means you can use this as a simple 3 band static EQ. And add the dynamics from there.
At the bottom are the settings for the dynamic action.
The red Gain Ride knobs function as a gain meter. They will wiggle along your music and show the amount of boost/cut.
Then there are the green Amount knobs where you finally can adjust how much the EQ should work. Positive settings will boost, negative will cut.
Finally there are level detecting circuits inside (envelope followers) which require Attack and Release settings. You can set these individually for each band. The default setting should be OK, but in case you hear crackling noises, identify the band and turn up the respective values.
So, this can work as a de-esser, take out boom or harshness, tighten your snare and leave the rest of the mix alone, etc...
Enjoy
Edit: I run some measurements and the module is 100% clean in frequency response, phase response, distortion, when all Amounts are set to zero.
And every other setting is what we are looking for anyway.
