|
Hi guyz, may I chime in?
Hey, I really love the fact that we can actually talk real engineering for a change. I am/was schooled and trained in digital engineering and I have dealt with issues such as jitter half of my adult life. So on that happy note, I have to agree 100% with what Monomer is saying! Some of those cute little animations that Space has here do show what jitter kind of looks like.
Space, if what you were seeing was jitter, then each cycle of your test would display slightly different A/D steps from cycle to cycle. I'm not seeing that. Just differences in sample test results. I think you would have to maybe put an O-scope on the analog output of your DAC on a very high frequency test sample and look for actual 'jitterring' to occur, and when you start talking about 1 part/million errors, man, you better have some pretty good gear! And whether or not you can hear it becomes more and more subject too.
I guess what we really care about tho is more about the A/D though, so unless you have access to be able to put a scope directly on your clock, isn't it kind of hard to actually measure true jitter anyway? I don't even see any signs of jitter on Space's test results at all. Just different sampling anomalies that are more dependent on filters and circuitry, timing between A/D and DAW and who knows what, but Jitter???
I'm only refering to the DAW images, not the scope ones, as I'm not even sure what it is we are looking at.
|