On Fri, 2010-07-23 at 17:37 +0200, Ralf Mardorf wrote: > On Fri, 2010-07-23 at 17:31 +0200, Ralf Mardorf wrote: > > On Fri, 2010-07-23 at 11:13 +0100, Frank Smith wrote: > > > Hi All > > > I was under the impression that every 3 db increase doubled the volume > > > and you needed to increase the power needed by a factor of 3 . Things > > > could have changed by now but this is what I use. > > > > > > > > > Cheers > > > Bob > > > > And ... 1 KHz sine wave vs music @ the same dB ... the basis has to be > > noise, representing the frequency spectrum regarded to the sensitivity > > of the human ear?! Or to usual music, usual speaking? ... dB is some > > artificial thingy itself. > > > > A paradox, dB for audio claims to be related to the human ear. > > > > I heard about 3 dB, 6 dB and 10 dB as twice as loud. > > > > I experienced 9 dB and 12 dB as twice as loud, but exactly 10 dB. > > 3 dB, 6 dB, "9 dB and 12 dB, instead of 10 dB" ... for my emotions there > is a math pattern. >
Regarding to digital meters (dBfs) and analog meters (VU), I never measured the acoustic pressure at the position of my ears. _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
