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Comments |
Two sounds with intensities I1 and I2 differ in intensity by n decibels where
n
=
10
log
10
(
I
1
I
2
)
. Intensity measurement is not often convenient and so the equation
n
=
20
log
10
(
P
1
P
2
)
, where P1 and P2 are the root-mean-square sound pressures, is often used.
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