2 ms·
Sound decreases by 6dB for every doubling of distance: https://www.airbornedrones.co/drone-noise-levels/ https://www.airbornedrones.co/drone-noise-levels/ So a
by saint_abroad 4y ago
Sound decreases by 6dB for every doubling of distance: https://www.airbornedrones.co/drone-noise-levels/ https://www.airbornedrones.co/drone-noise-levels/
So a typical 80db commercial drone flying at 300m (CAA minimum) would be 50db at ground level (closest point), or about a loud conversation (but less than quiet road traffic).
- Aperocky 4y agodrones noise are very directed, the side noises are much smaller than if directly below. Source: I did drone noise research a few years ago. It's almost impossible to detect via noise with decent distance (>100m) unless directly under.