[mlh]

Originally Posted by Foldbak

Your close. Not to sound like a know it all but (acoustic energy) doubles every 3 decibels. You won't necessarily notice a 3 db change unless you're nearing the (threshold of pain) around 100-130 DB's. 6 DB's is noticeable but not double. Perceived doubling of loudness occurs at 10 DB's. I only know this because I was a sound engineer for 30 years. I had to dig deep through the cob webs lol.

Thanks. I learned something today. Please explain more, acoustic energy, sound pressure.
Lynwood