I imagine these amazon drones are at least quieter than most consumer drones just based on their larger propellers. This is operating on the assumption that a l

I imagine these amazon drones are at least quieter than most consumer drones just based on their larger propellers. This is operating on the assumption that a larger propeller can spin slower to generate the same amount of thrust as a smaller propeller spinning faster, which might not be 100% accurate. Motor noise in general seems like it's kind of an overlooked issue though.