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Why don't they hear the drones/copters? Too much ambient noises?
I don't complain btw ;) I'm just curious.
Why don't they hear the drones/copters? Too much ambient noises?
I don't complain btw ;) I'm just curious.
The high frequency sound from these small drones attenuates pretty rapidly. Even without hearing protection and tinnitus, they probably wouldn't hear it from less than 50 meters.
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