> > I don't understand the premise of your question. > Take a signal that looks like 0, 2, 3 > then upsample it to 0,0,0,0, 2,2,2,2, 3,3,3,3 at four times the rate. > > How does this allow the DAC to do anything differently? >
No, it interpolates. So you get something maybe like: 0, 0.5, 1, 1.5, 2 and so on. What you're talking about is oversampling - just another name for upsampling, but usually used in reference to what modern DACs do internally. It is fundamental to how they work and yes, the smaller steps require less filtering (and yield better linearity, lower noise etc). The DAC in transporter oversamples by 128x, so a 44.1 signal is actually converted to analogue at a sample rate of 5.6 MHz... a high resolution indeed. Now, what's stupid is taking 44.1 CD rips, resampling them to 96KHz and then re-saving to disk, thinking you've "given it more breathing room" or "opened up the high end" or whatever. It's total nonsense, exactly like on CSI where they zoom in on a single pixel, click "ENHANCE" and then read a license plate from a mile away. It don't work that way. -- seanadams ------------------------------------------------------------------------ seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3 View this thread: http://forums.slimdevices.com/showthread.php?t=26685 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
