sharke
... If you watch any course in the production techniques of modern genres, you're going to see a lot of layering and parallel processing. A lot of stuff is divided into frequency bands and processed separately. Examples would include things like isolating the mids of a bass track and saturating them. Or compressing just the highs of an unruly synth patch. Or splitting something out into mid/side and compressing just the sides.Splitting the signal in an fx chain like this has infinite creative possibilities, and modern producers are exploiting these possibilities in their productions.
Of course none of this is impossible with Sonar. You can use aux tracks or buses. There are 3rd party plugins which offer separate left/right, mid/side or band processing. However, Bitwig (and I believe Ableton) has this functionality hard baked into their fx chains and it's a piece of cake to set up.
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Indeed, and those are not the only apps that do it natively. Studio One has Extended FX Chains, Tracktion's Waveform has its Modular Mix Environment, FL Studio has Patcher. I don't know about other DAWs but of course you can use Blue Cat's Patchwork or similar (DDMF's Metaplugin, Imageline's Minihost Modular beta) to sub-host and do whatever you want...
Reaper, by virtue of each track having up to 64 audio channels and a built-in routing matrix, has the ability to set up crazy complex stuff but it's not as nicely dressed up - unless you use the awesome
FX Rack script which basically recreates Blue Cat's Patchwork environment on top of Reaper's FX chain structure. This is cool because it avoids sub-hosting, and allows the full range of plugins that Reaper supports (most sub-hosts don't). I've tested it and like most things Reaper, it takes a bit of setup and figuring out, but once you're past that it's deep, flexible and stable.
Sonar's FX Chains, while quite cool, were not quite there somehow, I always hoped they would get some parallel/multiband/modular love but it didn't happen.