For the last couple of years I've been using Wavelab Pro 11 and iZotope RX 10. As stated, iZotope is wizardry for most things, IME. But like a number have said using plugins like de-click, de-noise, etc. reduce other sounds beyond the clapping, especially if you don't isolate a section. I never got Limiter to work like I wanted and compression was too difficult to get right (probably because I'm a dummy on how to use them correctly). So, I mainly use iZotope for the Spectral Repair and De-hum works really well for stuff like line noise or constant HVAC hum, etc. (The Repair Assistant is amazing too.) For clapping, since it typically rises then falls at the end of a section or song, I use the envelope tool in Wavelab: isolate the section where the clapping volume rises, open the Envelope tool (Process tab in the Audio Editor) then using the left-side handle thingy reduce to a level that makes sense and fits smoothly with the song and crowd response. It usually takes me a few tries until the reduction sounds seamless with the surrounding audio, but I've always been satisfied with the results. I used to use Audacity, but, since audience recordings are seldom ideal, I just had to get some better software to fix my fuck ups
and audience/venue cockups
.
