Due to the installation of noise suppression materials, the noise level in an auditorium decreased from 93
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Use the following information for determining sound intensity. The number of decibels β of a sound with an intensity of I watts per square meter is given by β = 10 log(I/I0), where I0 is an intensity of 10-12 watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear.
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