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- Hannu Kandelberg
January 14, 2004, 9:39 pm
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Re: LW db?
Lw = Sound Power Level -- The acoustic power radiated from a given sound source
as related to a reference power level (typically 10^-12 watts) and expressed in
decibels (dB) as:
Lw = 10log(W/10^-12) dB
Lw = 10log W + 120 dB
W = Acoustic power in watts
By definition, one Watt therefore corresponds to 120 dB for Lw.