newbie here so please be kind if my question is stupid,
i'm making a patch for an audio installation,
I have 3 audio channels output by 3 speakers and
1 audio channel getting environment sound from a microphone placed is in the same area of the speakers.
The environmental soundlevel controls the reverb and volume of the audio that goes to the 3 speakers,
so it has some feedback/leakage, not real audio feedback, only "dynamic", because when the audio channels raise in volume the mic perceive a raise in the env_soundlevel.
I want to subtract the audio that go to the speakers from the audio that is received by the mic channel, so to have in input only (more or less) the "real" environmental soundlevel.
Is it technically possible?
I looked in the tutorials and guides but found no solution.
Forgive me if it's trivial,
i'm just learning,