Wing has already changed their drones to attempt to reduce the annoyance from the noise. Better batteries may also assist to make drones quieter: if you have a

Wing has already changed their drones to attempt to reduce the annoyance from the noise. Better batteries may also assist to make drones quieter: if you have a bigger energy budget, you can afford to waste some of it using quieter but less efficient propulsion (like those toroidal rotors discussed here a little while ago).