At a recent performance, one of the vocal microphones was connected poorly and the sound recorded (example) contains some noise. As far as I can tell it's basically a lot of clicks as the connection is cutting in and out.
I have a recording of the main output from the mixer, as well as a direct out for the problem microphone (and a few other channels). Unfortunately it was a once-off performance so this recording is all I have to work with.
Most of the time, the singer using this microphone was a backing singer. For these songs, I'm planning to remove the sound from the problem microphone altogether. However, I don't have individual recordings for all of the channels. My current plan is to mix the main recording with an inverted copy of the problem channel. Is this likely to work? Or is there a better alternative?
However, on one particular song, this singer was the main (solo) singer. On this one I'd like to clean up the sound as much as possible while keeping the actual vocals. Is this feasible, and if so what would be the best approach? I've tried a couple of things without success:
The noise removal plugins that I've seen need a noise profile to compare against. Unfortunately the nature of the problem means I don't have any samples of "just" noise for this.
Audacity's click removal effect doesn't detect any clicks for some reason even at its most sensitive.
EQ doesn't seem to work as the noise is broad frequency.
To complicate things, my budget is very limited, I'd rather avoid spending anything if it can be avoided. I do own a copy of Reaper already.