Cyclone-style Dust Collectors.
On Wed, 24 Dec 2008 09:47:02 -0700, Mark & Juanita wrote:
In the Decibel scale, a 3 dB reduction equates to a reduction by 1/2. dB
scale is logarithmic. Depending upon whether one is converting from power
or not, the conversion from linear scale to logarithmic scale is either
dB = 10 * log10(P) or dB = 20 * log10(A).
That first line is the comforting part, after that, it's all Greek (geek?) to
me..
thanks!
Feliz Navidad
mac
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