Kn0cK0ut plugin may be worth a try , but don’t get your hopes up.
[ If the voices are simultaneous there will be occasionally be common frequencies within the speech, even though they are in different languages, those sounds will also end up in the “common” result ].
I don’t see how a center-channel remover/isolator is going to help me here. Are you sure you understood my initial question? or maybe I didn’t understand what you meant when you suggested knockout plugin, but last time I checked, I don’t think it can do what I am looking for.
Combine the two left channels as a stereo-pair, then and apply a centre-isolator to that pair, the result will be a mono track, consisting of what is common to the two left channels. Repeat with the two right channels.
You may very well be right : where the two different voices coincide their common-frequency-content will be isolated too.
but the problem is they only share the same background music, HOWEVER, not at the same amplitude… so this trick might not work if it assumes both background music levels will be the same amplitude? if not, i could try it and see what happens…
Trebor, are you aware that the next version includes the new “Vocal Reduction and Isolation” plug-in?
It is e.g. available in the current RC-3 download of Audacity 2.1.1.
I’ve recorded the beginning of the tutorial you’ve linked to.
The original audio track is only played for a little while and the guy keeps talking over it.
Anyways, the second half is the isolated version (strength 50, normalized).
The results are comparable to knockout, I should think, the more as the source is far from being ideal.
assuming you are still reading this topic, just one last thing to ask you.
Since I never used this sort of method before and I used a lot of methods, I was wondering about the IDEA behind it.
I mean you mentioned combining two left channels and two right channels and for each apply center-isolation. But why? what is the reasoning behind doing it this way? did you come up with this or did you saw this method somewhere before?