Le Tue, 15 Aug 2006 14:03:34 -0400, Paul Davis <[EMAIL PROTECTED]> a écrit :
> > The db inside jack are dbFS with a maximum possible signal of 0 db. > > Now, both jacqeq and jackmix give you a maximum conrol level at +6dB. > > It mean at +6dB in those EQ is equal to 0dbFS in jack. > > there are no dB units inside of JACK. some JACK applications use dBFS, > that much is true. however, it is not true that because the allow a gain > level of +6dB (or any value for that matter) that +6dB in that app > equals 0dBFS. this is because JACK's floating point sample format allows > values above 0dBFS, even though when such a value is passed to DAC, it > will be clipped and caused distortion or worse. > > within JACK, 0dBFS corresponds to a sample value of +/1.0, and will > emerge from the other side of your DAC with the maximum voltage level > that the DAC can emit. values above 0 dBFS are legal within JACK, but > should probably never be routed to a physical output port. > > --p > > Thank you for this explanation. Dominique
