Phil Leigh;695159 Wrote: > Dithering is entirely optional and affects what happens in the bottom > half bit (I'm sure we've been over this before?). > > Basic electronics 101... What happens when you put a changing DC > voltage into a capacitor?... Capacitor acts as an integrator... What > comes out reflects the integral over time of what went in... What I said about dither is correct AFAIK.
The "bottom half bit", as you put it, is present in every sample whether the waveform is big or small. So if I am right, the jaggedness is changed from signal correlated jaggedness to random jaggedness by dither. This occurs regardless of amplitude. My point is there appear to be voltage levels in the output from these DACs, so in fact they appear to be maintaining a voltage level during a sample interval (you can see the plateau shape in the waveforms). I agree this approximates to a smooth waveform at higher amplitudes but in signal terms this is increasing the S/N ratio rather than reducing distortion due to this step effect, if the signal is dithered! In an undithered signal, it would indeed reduce distortion. Darren Sent from my HTC Sensation Z710e using Tapatalk -- darrenyeats http://www.amazon.co.uk/gp/richpub/listmania/byauthor/A3H57URKQB8AQO/ref=cm_pdp_content_listmania/203-7606506-5721503. SB Touch ------------------------------------------------------------------------ darrenyeats's Profile: http://forums.slimdevices.com/member.php?userid=10799 View this thread: http://forums.slimdevices.com/showthread.php?t=94054 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
