![]() Where P1 and P2 are the relative powers of the sound.Īmplitude: The maximum absolute value of some quantity that varies. Although the units for sound intensity are technically watts per meter squared, it is much more common for it to be referred to as decibels, dB.ĭecibel: A common measure of sound intensity that is one-tenth of a bel on the logarithmic intensity scale. What if the intensity level or sound pressure level is known and the calculation of sound intensity or sound pressure is needed Use the decibel equations (with. ![]() The lowest audible sound on the decibel scale is 0 dB. Decibels are the units used in this scale, which is also known as the decibel scale (dB).
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