So say I have synth A and B. I want to play Synth A but I want to filter out all the frequencies from Synth A that don't Exist in Synth B. Synth B isn't played, just used to filter Synth A's frequencies.
Any idea how I could go about this or what this would be called if it's a thing?
Any idea how I could go about this or what this would be called if it's a thing?