After posting the above I found a white noise generator circuit here: Redirect Notice
So now it's only a matter of pulsing the output from the Uno with a transistor. I still have no idea how to cross fade the output from one speaker to another.
After posting the above I found a white noise generator circuit here: Redirect Notice
So now it's only a matter of pulsing the output from the Uno with a transistor. I still have no idea how to cross fade the output from one speaker to another.