I'm a long-time Audacity user, and I've found it to be about the best
application available for what you're trying to do. You select the audio
you want using shifted left and right arrows, similar to editing text,
and you can shorten the selection on the left using control+shift+right
or shorten the selection on the right using control+shift+left. Unlike
editing text, if you shift+right and then shift+left, your selection on
the right doesn't change, but you add sound to your selection on the
left. An important set of keys for you is control+1, control+2 and
control+3. Each file you import or track you record has a default zoom
width based on its initial length. Control+2 resets that zoom width to
something in the middle, it says normal. Control+1 zooms in, tightening
the area that you select with shift+arrows and deselect with
control+shift+arrows. Control+3 does the opposite. It zooms the audio
out so that each time you select or deselect a section of your audio,
the selected or deselected piece is longer. These keys also determine
how far your cursor moves when you just want to seek through the audio
to find the part you want to select. You jump further using control+3 or
tighten the movement with control+1. And of course control+2 will take
you back to a middle level. The rest is pretty straightforward. Deletion
is achieved with the delete key, cut, copy and paste are the same as in
a text editor, and file -> export selected audio will export what you
have selected, even if you don't cut or copy it.
If you have access to Flatpak in Fedora, I would recommend installing
the 3.x Audacity you'll find there, unless there is a packaged 3.x
version already available. 2.x has a strange focus bug that seems to
take you off your main track list randomly, usually putting you on some
kind of drop-down box related to sound selection or device output. The
3.x version in Flatpak doesn't seem to have this issue; no matter what I
do, I always stay focused on the track list using 3.x, but my package
management doesn't have that version, so I need to install from flatpak,
which can be done easily using gnome-software. Hope this helps.
~Kyle
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