Consumer drones aren't really aiming for quiet though. My racing drones are very buzzy since the small 3-5in props are fast spinning to have quick reaction time

Consumer drones aren't really aiming for quiet though. My racing drones are very buzzy since the small 3-5in props are fast spinning to have quick reaction time. My heavy lift photography drone with its slow 12in props (aiming for efficiency) is way larger and much quieter.