> There’s an old electronics joke that if you want to build an oscillator, you should try building an amplifier
This can be easily demonstrated using so called no-input technique[0] which basically means that you patch audio mixer output to it's input and it starts feedbacking and you can create some tones from this. Note that this needs to be done carefully.
That was a delicious sonic experience. Reminds me of "circuit bending", an aesthetic technique to push the limits of hardware in unintended ways to get creative effects. Otherworldly sounds emerging from glitches, feedbacks, overdrives.
What's fascinating is the endless variety of chaos and patterns created from such a simple mechanism and system. It seems the feedback is key, how an output is fed back into another input. Recursive functions, like fractal geometry.
This can be easily demonstrated using so called no-input technique[0] which basically means that you patch audio mixer output to it's input and it starts feedbacking and you can create some tones from this. Note that this needs to be done carefully.
[0]: https://www.youtube.com/watch?v=H-7kQmpjBds&t=2s