jt25741;202916 Wrote: > Although I don't have the Stello, my impressions on upsampling sound are > similar to yours. Almost without exception, upsampling sounds better > -- smoother, more detailed, better soundstaging etc.. As to all the > technical reasons why, your explanations sound reasonsable to me -- but > I am unsure.
There seems to be a deathly silence from DAC designers about why they work (they only do if implemented properly), and that is probably because the story is not the sort of thing audiophiles really want to hear. So... "all DACs suffer from distortion due to non-linearities, and this is particularly so at high volumes, and it is particularly noticeable to human ears due to it's artifical nature. One way to reduce it is to feed the DAC with an upsampled signal so full of ultrasonic noise that the non-linearities added by the DAC have less effect on the baseband audio signal...". Doesn't sound like good marketing copy does it! Seems to be more effective than straight dithering because it is signal-dependent (the ultrasonic images are higher level when the music is louder), so it doesn't affect S/N as much for a given amount of dither. There is nothing magic about it, it is just another bodge to improve the perceived accuracy of a flawed recording/playback technology. The same happened with Vinyl until it really did sound uncannily real, and I guess digital will continue to go through the same evolution. -- BigEars ------------------------------------------------------------------------ BigEars's Profile: http://forums.slimdevices.com/member.php?userid=6154 View this thread: http://forums.slimdevices.com/showthread.php?t=32055 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
