I would like a sound tone generator or a function generator, that I can cast to a device.
My specific need is to hook up a tone generator to systems, without a wired connection.
Ideally a audio function generator app, which can cast, would be desirable because anyone could use it, and there would be no special hardware or wiring.
Because I will want to change frequency real time, a youtube recording would not work.
Does anyone know of an app which is a function or tone generator and will cast?