Asked by Anonymous
The amplitude of a sinusoidal sound wave is quadrupled.
a) By which factor is its intensity multiplied?
b)By how many decibels does the sound intensity level increase?
a) By which factor is its intensity multiplied?
b)By how many decibels does the sound intensity level increase?
Answers
Answered by
Damon
Intensity is proportional to amplitude square (power is force times speed and both are doubled) so 4
10 log I2/I1 or 20 log A2/A1
20 log 2 = 6 Db
10 log I2/I1 or 20 log A2/A1
20 log 2 = 6 Db
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