Help please!!!! By how many decibels do you reduce the sound intensity level due to a...
Help please!!!! By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically.
Homework Answers
sound intensity level is given by
L = 10 log(I/I0)
I is proportional to 1/r^2
so we have
L2 = L1 - 10 log(1/4)
L2 = L1 - 6
the intensity level decreases by 6 dB
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Help please!!!! By how many decibels do you reduce the sound
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