cliveb wrote: > What are your sources? If they are native 24 bit, then fair enough. > However, if they are mainly 16 bit from CD rips, then you really don't > need to worry about dither. Many years ago the SB and TP firmwares were > updated so that all digital attentuation steps down to about -40dB or so > were arranged such that there was never any fixed point rounding or > truncation of the 16th bit (ie. not until you get down to the point > where the 16th bit becomes the 24th bit). Can you remember where you read that?
According to my tests on the TOUCH, vol approx 30-100 seems to obey approx 0.5dB per step (which would make vol 40 approx -30db) but below 30 the drop off in dB is more rapid. 0.5dB per step is what I've seen quoted for SB/Transporter. I calculate for 16 bit source this would be possible only down to 30db assuming 12 volume steps = 1 bit. (Some intermediate volume steps between 40, 28, 16, 4, 0 would require truncation, there just aren't enough bits to preserve fractional bjt shifts down there.) But all this assumes that the Touch is similar, and it appears that's not a given! Does anyone have info on the Touch specifically? Check it, add to it! http://www.dr.loudness-war.info/ SB Touch ------------------------------------------------------------------------ darrenyeats's Profile: http://forums.slimdevices.com/member.php?userid=10799 View this thread: http://forums.slimdevices.com/showthread.php?t=103842 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
