[jdalgetty]

I wonder if you could do some sort of noise cancelling of the prop noise?

[LeoPanthera]

Compose a piece that actually uses the prop noise, and have them vary the speed of the motors during the piece in order to alter the noise.

[verdverm]

They don't look to uses props, but bladeless air flow tech, based on the renders anyhow

[shever73]

The article states:

> As of now, the drones’ propellers are still somewhat noisy. But as quiet drone technology becomes available, they’ll be able to add it to the existing framework.

[lostlogin]

They have found a completely non-reassuring way of dismissing the issue.

[klyrs]

Never trust a render.