Question

A point source of sound produces a noise of 70dB at a distance of 20m from it.what will be the noise level at 80m from it.

Answer 1

Answer:

3dB rule and the doubling of sound energy

In a work context, this means that a small increase in the number of decibels results in a huge change in the amount of noise and, as such, the potential damage to a person's hearing.