Without extra hardware all you get is a square wave. Do you not need hardware to drive your speaker?
However, a few cycles of random square waves sounds like a burst of noise and that is a bit like a shot. So try that.
Without extra hardware all you get is a square wave. Do you not need hardware to drive your speaker?
However, a few cycles of random square waves sounds like a burst of noise and that is a bit like a shot. So try that.