Originally Posted by dcuny
Here's the hard way to do it in Reaper:
  • Add an empty track under the drums. Title it "Snare".
  • Click the "Toggle Razor Edit" to turn on razor editing.
  • Click the "Locking" icon to lock items
  • Right-click the "Locking" item to and make sure "Items (prevent left/right movement)" is selected.
  • Play through the audio, finding the snares. Right-drag to select the snare with razor edit, and then drag it down into the "Snare" track. Use Ctrl+Left and Ctrl+Right to move through the track.
You can then do whatever processing on the isolated "Snares" track to make it fit.
It's tedious, but really doesn't take that long to do, because you can pretty easily identify the snares by sight, and play the track if you have any doubt.
See the attachments for a screenshot and an animated GIF of selecting and dragging the snares using razor edit.
I've been there & done that - works a treat, rather like razor edit de-essing BUT is tedious
Doing essentially the same process but copying rather than cutting then flipping phase on the copy track might also get decent results.

Cheers
rayc
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