Sorry. I read it three times and I can't get the timeline.
You read or perform through your microphone chain to live presentation and it sounds just fine.
Then what, now?
You record a presentation in Audacity. Then it gets fuzzy. You play the work in Windows Media and it sounds perfect but you play the
same work in Audacity and it sounds tinkly and metallic? That's where I lose it. Audacity records everything clean. Audacity does not apply effects, filters or corrections during recording.
Do you turn off Windows voice processing when you work? There is a published solution for people encountering metalic, honky or other distortions cause by overly aggressive Windows echo cancellation and noise suppression.
https://manual.audacityteam.org/man/faq ... hancements
However, that may not be the whole story. Sound that has been processed, noise reduced or any of those other tricks isn't "pure, clean audio." It's audio with subtle distortions added to it that happen to sound good. The problem comes with a second pass. A noise reduction may create garbage later when nobody is expecting it because the starting audio wasn't clean. I call that the time bomb effect.
That's also why it's the world's worst idea to do production in MP3. Two MP3 creations, one after other, may turn your show to trash, even if they're set for the same quality value.
What's a Behringer compressor and and which Focusrite?
Do you like to record internet audio? The sound settings for that can conflict with clean recording in Audacity. Make sure Audacity is recording from a thing, not a service. For example, I record
USB Audio CODEC and I know that's my Behringer UM2. I can touch it and look at it. There's a trick here of unplugging your microphone and
Transport > Rescan... If it was real, it will vanish.
Windows people can record from
Stereo Mix to get internet audio and that's
not a thing. You can't pick it up and hold it. That's a software trick the machines uses to manage the sound pathways. Don't use that for live recording.
Koz