Colin Burchall schrieb:
> As a rule of thumb, 10dB is very close to an average person's perception of
> doubled volume.
Only a rule of thumb? Have a look onto the "sone" scale and it's formular (I
don't have it at hand) when converting between sone and dB. A sound of 2 sone is
exactly twice as loud as a sound of 1 sone (at least for an average person...).
Ralf
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