Take the classic experiment of using ordinary feedback: just take the output of something and feed it back into the input. Those of us who do that have had really rich experiences. And it is obvious that that line of experimentation can continue.
David TudorMost electronic equipment uses the principle of amplification. You need filters, modulators and mixing equipment which have gain stages. By piling these components up, I was able to work without any sound generators and I made several pieces in that manner.
David Tudor