Generic sidechaining support

[apohl79]

Discussed in https://github.com/apohl79/audiogridder/discussions/666

^{Originally posted by addsubtractstudios July 26, 2021} Hiya, firstly, amazing app. Running some tests in Audio Hijack in a local setup, before I attempt to integrate it into the workflow and add an old yet powerful pc as a Server on the network. Very impressed so far!

I've been using UAD Luna for the past year (long time Logic user prior), and currently, it doesn't support Sidechaining/Key Input. As a note for clarification, UAD Luna supports 3rd party AU plugs, some of which support Sidechaining, however, Luna doesn't offer a sidechain "bus" so the function isn't used within these plugins.

My question; Is AG capable of allowing or could it offer this functionality? I know that a plugin within a DAW basically looks for an SC/Key 'bus' to then pass that audio to the plug to utilize, but is there any way to Hijack a signal from somewhere to feed the SC input to the server? I understand AG is pulling audio this buss from the Daw but is there any way to potentially feed the active inputs (of the AG server Sidechain Channels) with a feed of my choice? I thought came close with BCA's Patchworks. As in AG, I can see the SC in/outs as channels but I've found no method to patch audio into them except via a Daw.

Needless to say, I've tested the AG's SC in Logic (with FF-MB & ProQ3) and it works a treat as expected.

If it's a workable angle then I know a very large group of UA users that would be on it in a heartbeat!! A number of users need SC for frequency-based processing, a little more complex at times than Kick and Bass Sidechaining, which can be easily worked around in Luna with midi tools such as Shaperbox, or LFO tools.

Luna, like other Daws I've noted in the threads here, also struggles with CPU/core allocation. The local functionality of AG is brilliant btw. Looking forward to pushing the envelope of my unused cores with some more testing tonight!

Thanks, Adam.