seanadams Wrote: > Agreed - once it's in digital land, it's only a matter of having no > errors (jitter doesn't count BTW; that's really an analog phenomenon).Ummm... > sorry, I beg to disagree. Jitter is *very* digital. Okay, maybe we could argue that it's analog but the point is that it primarily affects the digital domain. Being lazy, here's a definition I found on the internet:
-Jitter is the deviation in or displacement of some aspect of the pulses in a high-frequency digital signal. As the name suggests, jitter can be thought of as shaky pulses. The deviation can be in terms of amplitude, phase timing, or the width of the signal pulse. Another definition is that it is "the period frequency displacement of the signal from its ideal location." Among the causes of jitter are electromagnetic interference (EMI) and crosstalk with other signals. Jitter can cause a display monitor to flicker; affect the ability of the processor in a personal computer to perform as intended; introduce clicks or other undesired effects in audio signals, and loss of transmitted data between network devices. The amount of allowable jitter depends greatly on the application.- I would be willing to accept Mike's -"good enough"- but I have trouble with -"it's only a matter of having no errors"-. However, I think one key point from the definition above is, -"The amount of allowable jitter depends greatly on the application"-. I come from the telecoms world where jitter can be a real headache in digital transmission networks. It probably is less of a factor for audiophile applications but how much less I honestly don't know. Still, for a real-time application where digital transmission is involved I would assume that synchronization and clock recovery are also important. Please correct me if this assumption is wrong. -- Aylwin _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
