Feb 4, 2012 #1 Ralphonsicus Messages 47 Reaction score 0 The deciBel is probably the most commonly used unit for sound, but why isn't there an SI unit? Also, what is a logarithmic unit? Thanks.
The deciBel is probably the most commonly used unit for sound, but why isn't there an SI unit? Also, what is a logarithmic unit? Thanks.
Feb 4, 2012 #2 torquil Messages 648 Reaction score 2 Sound are waves of pressure fluctuations, and this is an SI unit for pressure http://en.wikipedia.org/wiki/Pascal_(unit) This explains the logarithwic dB unit: http://en.wikipedia.org/wiki/Decibel
Sound are waves of pressure fluctuations, and this is an SI unit for pressure http://en.wikipedia.org/wiki/Pascal_(unit) This explains the logarithwic dB unit: http://en.wikipedia.org/wiki/Decibel