Ignore the finish gap until this many pops have been heard, so the quiet warm-up before the first kernel doesn't end the run.
Minimum spacing between two counted pops. Stops one loud pop's echo from counting twice.
The finish fanfare plays either way. Turn this on to run the loop the whole time — each note attack mutes the detector for 75 ms so the phone's own speaker can't be counted as popping.
Place the phone face up within about 30 cm of the microwave door, screen unlocked. The mic stream stops as soon as the bag is called done.