Originally Posted by SubVersion
That sounds like not an issue with if the DAW supports inline plugins - what DAW doesn't? It's just another word for real-time recording. The key is if your spectrum analyser has a .dll VST extension, I would think.
Here's the spectrum analyzer I was talking about with Ableton, as far as I know it's not a VST just a core feature that Ableton offers.
(random screenshot on google)
By inline I meant being able to devote a panel like that for any VST so it's persistently there, no more opening/closing and shuffling windows for something you're always gonna need up front