Quote:
Originally posted by Heavy_Equipment
gmat,
it's been said before that 2 identical fans are only 3 decibals louder than 1 fan...if memory serves me here. You're not adding the decibals from fan #2, your combining them.
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Partly correct... since the dB scale is logarithmic, a 3 dB increase is twice the sound level... so gmat is still right!