4. (15 points) An Airborne no results from more than one noise source, the inten

Question

4. (15 points) An Airborne no results from more than one noise source, the intensity of the f then, the increase in noise intensity resulting from the other noise sources are added as follows: important consideration for choosing an hydraulic pump is the noise level. ise from pumps is measured in decibels (db). When considering sound intensity that rst noise source is considered and I = In + 10 log Lili Where: In is the highest intensity level of all the noises Using the above information, solve the following: The noise intensity of a certain hydraulic power pack is 75db. If two other identical power packs are started, what would be the reading on a decibel meter? rl

Explanation / Answer

Here the concept involved is that when two identical level of noises are acting together then then resultant intensity of noise increases by 3db.

Hence the resultant noise level will be 78 db.

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