Acheiving this principle in Reason is ridiculously easy, but you can adapt the basic principles in many ways using all the tools that are available within the Reason environment and perhaps witht your of imagination sparked off you will no doubt be able to come up with some far better examples than the one I'm providing here just to kick off the discussion.
This little combi here is meant to be used as an insert on a Main mixer channel to control and audio (vocal clip) on that channel.
It's dead simple and comprises simply of a spider to split one signal into and MClass mixer (notice no audio comes out of the compressor) which is merely there to provide the Gain Reduction CV signal which is routed to the Combinators CV1 input which is then set to unipolar, to drive a level control on a 14:2 mixer which takes another output from the spider for Mixer channel that is to be controlled.
I haven't programmed any knobs or buttons on the Combi so you have to open it up to control it.
Adjust the input gain on the compressor along with a low threshold setting and a high to get a good 'Gain Reduction' signal showing up on the meter. Attack and release will work exactly like they would using standard compression. Range, like you find on a certain popular vocal rider plug-in is altered in the Combinator's Programmer notice the defaults I've set here on CV1 in the Programmer are for the Level slider to move between the range of 108 to 56 so when the signal gets louder the level gets brought down and vice versa.
So there's the principle, see what you can cook up to suit your own needs from this simple example.
Some suggested improvements:
Create a stereo version that rides left and right levels independently.
Add a 'look-ahead' function to ensure any intial high volume peaks gets brought down also.
Alternative ways of getting a cv signal from the amplitude of an audio signal rather than using the M-Class comp.
Maybe use an envelope for better control over the level than you'll get with Attack and Release on the M-Class
A way of controlling the range other than setting it in the Combi's programmer.
Anyway those I just my suggestions and if my experience of this community is anything to go by there will be plenty of ideas that I couldn't even dream up.
So don't be shy show us all what you can come up with. At least you'll already know that my solution is gonna be the lamest...
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