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Re:Stanford lab envisions delivery drones that save energy b... by Retric on Thursday June 04, 2020 @07:28AM (#23415222)
The camera is within 3 feet of that thing and it’s what 75 DB? Compared to the normal city traffic that relatively quiet as it’s horns, squealing breaks, backup beeper etc that are really annoying. On top of this, they are not going to spend very long at street level. IMO, the only real noise issue is raising the street level sounds to higher floors. That’s likely to get serious opposition in many cities.

The critical issues of safety etc seem like a much bigger deal to me.

Re:Stanford lab envisions delivery drones that save energy b... by jcims on Thursday June 04, 2020 @08:05AM (#23415508)
This report puts it at 66db at 25m away (20m up, 15m lateral)

https://www.hollyspringsnc.us/DocumentCenter/View/23698/Soun...

So say 4m overhead 3m away (5m distance) you have ~80db

https://www.omnicalculator.com/physics/distance-attenuation

Add in the fact that you would feel the prop wash from it and it's going to be a fairly disturbing experience.