Question: Sound level B in decibels is defined as B = 1 0 log ( i / i ) where i = 1 1 0 -

Sound level B in decibels is defined as
B=10 log (i/i)
where i =110-12 W/m2. The decibel
scale intensity for busy traffic is 88 dB. Two
people having a loud conversation have a deci-
bel intensity of 70 dB.
What is the approximate combined sound
intensity?
Answer in units of W/m2

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