Dimdim wrote: > That may be the case in general, but in this case these boards do > decrease jitter (that has been documented by measurements)
Jitter at the DAC input or output? > They say that delta-sigma DACs do a lot of complex math on the signal > and that essentially "amplifies" even the most otherwise insignificant > timing errors in the I2S streams. I can't do any better than this, I'm > not a DAC chip designer. Who are "they"? I am pretty familiar with the maths (and construction) of delta-sigma DACs, and none of the calculations are in any way affected by the incoming data clock, only by the DAC master clock. The incoming data is buffered. > Regarding the measurements, what kind of measurements would you expect > to objectively determine "soundstage" or "level of detail"? > > The measurements most hobbyists are capable of show all DAC chips and > op-amps to measure almost exactly the same. Yet they all sound > different. Of course you can never determine purely subjective perceptions in an objective way (except by statistics on a large number of test subjects), but results of jitter, in those DACs where it affects the output, is relatively easy to measure with a simple sound card/interface. "To try to judge the real from the false will always be hard. In this fast-growing art of 'high fidelity' the quackery will bear a solid gilt edge that will fool many people" - Paul W Klipsch, 1953 ------------------------------------------------------------------------ Julf's Profile: http://forums.slimdevices.com/member.php?userid=42050 View this thread: http://forums.slimdevices.com/showthread.php?t=106193 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
