gavspav

I know nothing about this but just wondering, if I know what I am playing through the speakers during a recording is it possible to remove it afterwards with any kind of accuracy?

Kind of like noise cancellation but where you know the waveform you want to remove.

if its worth attempting could you point me in the right firection?

remove-speaker-sounds-from-recording

I would try inverting the waveform and playing that at the same time as it occurred in the recording from which you'd like it removed.

Remove Speaker Sounds From Recording?