opaqueice;289810 Wrote: > Sorry Phil - I never responded to this. > > Certainly it's possible that there was at some point a bug that > prevented the firmware from rounding properly, and if so the error > could be arbitrarily large. But if you round correctly (and we're just > talking about multiplying two numbers, it's not rocket science) the > error due to the rounding is always in the LSB of the bit depth you're > using. > > The procedure slimserver was using before the "bug" fix - at least as > described in the bug report I linked to - is proper rounding when > multiplying by a gain factor that doesn't have only the 8 MSB non-zero > (that's the condition to avoid needing to round). What had changed was > that the new volume curve meant that -none- of the gain factors (other > than max, of course) were perfect divisors like that, so at any volume > setting there was a rounding error. But as we've seen, that error is > totally negligible. After the "bug" fix all of the gain factors down > to -30dB or something were divisors, so there was no longer any > roundoff error, but the tradeoff was that the volume scale wasn't quite > linear in dB any more. Neither of those is audible, so it doesn't > matter - the whole thing was a waste of time.
Ah...I see. Thanks for explaining. I got a bit lost in the arcanities of the bug report!. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT RCS 2.2X with Good Vibrations S/W - MF X-DAC V3/X-PSU/X-10 buffer (Audiocomm full mods)- Linn 5103 - Linn Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber & Chord cables ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=45736 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
