From bruce@ashbysolutions.com Fri Apr 21 05:08:34 2006
Subject:Re: Ordered a Pro-145

Hi,

>Huh? 3 db is twice the volume...

No, 3dB is twice the power or sound pressure.

The human ear hears sound level logarithmically. So even though it's twice the power, it's not "twice as loud."

1dB -- ~25% more power, barely discernable to almost any human
3dB -- 100% more power, noticeable by the 'average' listener, but only as a small change
10dB -- 900% more power (10x total), considered 'twice as loud' by the average listener

Regards,

-BW

--
Bruce Wahler
Design Consultant
Ashby Solutions™ http://consult.ashbysolutions.com
978.386.7389 voice/fax
bruce@ashbysolutions.com

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