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Written by TParker
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Thursday, 03 February 2005 |
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A decibel based unit intend to give an absolute measurement of sound pressure, where 0 dB ="20µPa ( micro Pascals). The human range of hearing is related to this scale with 0 dB(SPL) being the threshold of hearing, while 120-140 dB(SPL) (depending on which reference book you use) being the threshold of pain.
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Last Updated ( Thursday, 25 August 2005 )
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