(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

What fraction of the acoustic power of a noise would have to be eliminated to lower its sound intensity level from 90 to 70dB?

2. Relevant equations

I = Power/Area

B = 10 * log *(I/I_{0})

I_{0}= 10^{-12}W/m^{2}

3. The attempt at a solution

The answer I got for this is that the new power is 1% of the original. Which I don't think is true. A nudge in the right direction would be appreciated

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# Homework Help: Sound Intensity level problem

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