26-Feb-2016, 23:22
(26-Feb-2016, 19:10)Antoine Wrote: Krisp suggested it to be error free from source to DAC OUTput. I'm saying it is at best error free up to the D to A conversion. And with error free I mean bit perfect while we're in the digital domain.
The bitstream signal representing the "ones and zero's" is an analog signal. With it travels noise. The signal also distorts while "in travel". The noise and distortion influences the D to A process. Noise, for example in the ground plane, also influences clocks inside the DAC, causing jitter.
...
John Swenson is one of the gifted men who has written plenty or articles on these matters, so I'll just refer to those as a nice starting point. Of course lots more can be found on the net.
http://www.audiostream.com/content/qa-jo...at-digital
http://www.audiostream.com/content/qa-jo...-just-bits
http://www.audiostream.com/content/qa-jo...fect-sound
http://uptoneaudio.com/pages/j-swenson-tech-corner
Sorry I was not precise when I wrote output of the DAC. I meant till the end of the digital path which ends inside the DAC.
And I agree with the noise that is injected especially from the digital curcuits (I read the articles and the postings to the articles), but the noise is just noise (because the modulations of the 1 and 0 are in the megahertz range and the fourier spectrums of those modulations are even higher). All these modulations add up to an irregular random oscillations and the level at which they oscillate can (hopefully) only be heard ( well just the part up until approx. 20kHz or less) when you are close to your speakers and not in your listening position.
As I said, it makes sense to concentrate the "quest" to the analog path after the DAC (if it is a well designed DAC
).Cheers,
Krisp
