In windows 10, audacity version 2.3.1. I’ve applied the amplify effect to a section of my lead guitar track solo to make it stand out from the mix. How do I fade the effect in and out so it’s back to normal. it abruptly stops now.
I assume you saved the original, because it’s hard to fix now…
Use the [u]Envelope Tool[/u]. This may take some practice but of course the idea is to leave the endpoints untouched so you can fade-up or fade-down with no sudden jumps in volume.
I assume that you mean that you have a guitar track that starts at one volume level, jumps to a higher level, stays at the higher level for a bit, then jumps back down to the lower level. Is that correct?
If so, find the exact points where the level jumps, and create a “split” at each point. See: https://manual.audacityteam.org/man/edit_menu_clip_boundaries.html#split
This will make it easier to adjust the higher level section to match the two lower level sections, which you can do using the “Envelope Tool” (see https://manual.audacityteam.org/man/envelope_tool.html)