michael123;574566 Wrote: > You do not understand what dither is. You probably refer to adding > random noise to the samples, but this is ain't dithering. Michael, dither is > *exactly* the addition of random (TPDF) noise which may be noise shaped if desired to give a lower subjective noise floor. Please will you explain to me your understanding of dither?
> BTW, you can turn dithering on and off in SOX (-D option, I think), the > bug in SOX was that they improperly calculated output sample size. Yes, the > incorrect output precision bug was fixed. The problem I have now is that sox will not allow dither to be applied in a simple 16-bit to 24-bit word increase operation (no upsampling), even if it is specified manually with the "dither" audio effect option. > What Meridian paper refers to in 'arithmetic operations which modify a > sample result in an increase in the number of bits representing the > output result; in a fixed channel size, this can therefore lead to > truncation or quantisation effects' I think is simply overflow, or > clipping... > > That's why I reduce volume by 5%.Overflow and truncation are related. If you > have overflow and truncate without dithering, you end up with non-linear quantisation effects. It has nothing to do with clipping. -- VirusKiller ------------------------------------------------------------------------ VirusKiller's Profile: http://forums.slimdevices.com/member.php?userid=19799 View this thread: http://forums.slimdevices.com/showthread.php?t=69454 _______________________________________________ ripping mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/ripping
