Bill Dube wrote:
<Snip>> And from a guy who did pro sound work in a former life: the 3dB drop is indeed 1/2 the *power* but is typically just noticeable as a change to the average ear. The 10dB decrease is 1/10 the power, but is perceived as being 1/2 the sound level by an average ear. (This is worth remembering when the stereo sales guy tries to convince you that 100watts is twice as good as 50watts.)

Bottom line, if you got a 10dB decrease, your plane should seem 1/2 as loud to the listener, an impressive accomplishment.

Way to go Ed!

Charlie

BTW, which weighting are you using? If memory serves, the 'A' weighting is an almost worthless measurement for working on protecting your hearing. (details if anyone is interested)


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