Le Tue, 15 Aug 2006 12:01:11 -0400, Lee Revell <[EMAIL PROTECTED]> a écrit :
> On Tue, 2006-08-15 at 16:51 +0100, Dan Mills wrote: > > This is dependent on the microphone, preamp and sound > > card in use, or for the output case, the soundcard, > > power amp gain and speaker sensitivity (plus room > > effects). > > > > You need to ensure that 120dbSPL at the transducer > > does not clip either hhe mic, preamp or soundcard and > > then find out what sample value this gives with your > > hardware. Calibrate that point as 120dbSPL, then as > > long as all your hardware is linear the rest of the > > thing will just work. > > FWIW, there is some work going on in ALSA to make the drivers use dB > units for the mixer, rather than arbitrary scales. But of course this > will only work for devices for which the developers have the full > hardware specs. > > Lee > It is a good news. With jack, mixers as jackeq or jackmix are already using db scales. Dominique
