Someone probably mentioned this before, but here goes:
[File under: Meta device suggestions]
If Renoise had a parameter mapping device that could listen to parameters in (any?) DSP effect, and apply that to another parameter? Think of the velocity device. It already has most of the fundamentals, such as range and scaling of values.
In practical use, it could open a number of possibilities, such as having a (custom-made) VST plugin that simply listen to the amplitude of the audio. This plugin could then output the value in realtime as a parameter (slider) that we could hook up with another parameter (such as a filter, or whatever).
Making small, custom plugins to do this kind of low-level work isn’t hard at all (one word: Synthedit).
@It: yeah, let’s call it the Parameter Link device.
It’s a program designed to help you make your own VST plugins, with a visual programming interface (connect various modules with virtual patch cables). Some of the most popular plugin’s around are built with Synthedit.
+1 … keeping in mind however that this will not solve the sidechain issue as changing parameters from a VST as quickly as volume chances in a waveform tends to freeze the host (I tried already)
The host, as in Renoise? That’s strange - updating a parameter in itself shouldn’t cause problems as it’s not exactly working at audiorate, but rather GUI refresh rate (dunno, something like 20-60hz). Have you tried throwing a peak follower on top?