Explore BrainMass

Sound: Loudness and Intensity

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

The intensity at a distance of 6.0 m from a source that is radiating equally in all directions is 6.0 Ã- 10-10 W/m2. What is the intensity level in dB?

© BrainMass Inc. brainmass.com March 21, 2019, 11:42 pm ad1c9bdddf

Solution Preview

Please see the attached file for the solution.

Intensity of sound is the amount of energy incident per unit area per unit time normal to surface. The unit of intensity is W/m2.
From a point source the emitted energy will distributed uniformly in all direction and will fall uniformly on a spherical surface with source at center. If a point source emitting power P, then at a distance r from the source the intensity will be

Solution Summary

The relation between Intensity and loudness is established and loudness in dB is calculated.