In Reply to: RE: Jitter posted by Tony Lauck on June 2, 2012 at 10:29:25:
Ah, good point. After a little thought I see that every example I gave could be grouped under the heading of "Noise," and that jitter should be classed as "Distortion."
Is this a good way of thinking about it? "Noise" is inherent to the playback chain and is always present, while "Distortion" is error created by how the signal chain handles the music itself. I'm struggling to figure out how frequency response deviations fit into that paradigm, perhaps that's why they are specified separately.
Anyhow, being constant, Noise must be far easier to recognize than Distortion, which is only present as a shading to the music itself. I guess one of the benefits of Digital is a dropping of the noise floor to levels Analog recorders are incapable of. Certainly it's easy to tell my "AAD" recordings from my "DDD" recordings simply by the presence of the tape hiss in the former. I suspect, though I don't know this for sure, that the Digital recorders also have a flatter frequency response than Analog recorders. I do know that the specifications for CD playback show a far flatter frequency response than that of any phono cartridge I've ever seen.
I'm still left wondering what "Jitter" sounds like. As it is a Distortion, I guess the question is tantamount to wondering what "Harmonic Distortion" sounds like. As you point out, the vary nature of Distortion makes it difficult to hear unless it's sufficiently high in level. I'm not sure I've ever heard Harmonic Distortion, perhaps because all the amps I've ever listened to have sufficiently competent circuits as to reduce it to the level of inaudibility. Certainly I don't sit up nights worrying about ways to reduce the Harmonic Distortion in my system!
If Jitter is just Distortion, then doesn't it follow that like any other Distortion it too could be reduced to the level of inaudibility? I guess to paraphrase the old question, "If a tree falls inaudibly, does any one care?" How soft does Jitter have to be before we can stop worrying about it? How loud does Jitter have to be before it becomes intrusive?
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Topic - Jitter - Tubers 01:42:26 06/01/12 (33)
- RE: Jitter - Sumflow 19:09:25 06/10/12 (0)
- RE: Jitter - audioengr 16:50:58 06/04/12 (0)
- Getting From Here To There Will Always = Jitter - Dynobot 17:20:05 06/03/12 (3)
- RE: Getting From Here To There Will Always = Jitter - Bromo33333 18:20:53 06/03/12 (2)
- RE: Getting From Here To There Will Always = Jitter - Dynobot 19:00:07 06/03/12 (1)
- RE: Getting From Here To There Will Always = Jitter - Bromo33333 09:47:43 06/04/12 (0)
- One double espresso: Jitter under control. Two doubles: Jitter can become a bit much. - willkayakforfood 13:48:17 06/03/12 (0)
- What I really wonder is WHO here can measure jitter - - - - AbeCollins 11:33:39 06/03/12 (9)
- RE: What I really wonder is WHO here can measure jitter - - - - audioengr 16:53:15 06/04/12 (2)
- Ah, that makes things clearer... - Jaundiced Ear 22:03:38 06/04/12 (1)
- Clear as MUD - Dynobot 15:37:24 06/05/12 (0)
- Depends how you define "measure" :) - slider 11:43:50 06/03/12 (5)
- RE: Depends how you define "measure" :) - AbeCollins 00:33:56 06/05/12 (3)
- RE: Depends how you define "measure" :) - rick_m 07:39:15 06/05/12 (2)
- RE: Depends how you define "measure" :) - Jaundiced Ear 23:03:42 06/03/12 (0)
- In my experience it's vividly noticed when it's greatly reduced by comparison. nT - Vic D 09:24:56 06/03/12 (0)
- RE: Jitter - stereo5 16:24:00 06/02/12 (0)
- RE: Jitter - Jaundiced Ear 22:36:59 06/01/12 (6)
- Exactly. See my comments above - nt - AbeCollins 11:34:43 06/03/12 (0)
- RE: Jitter - Tony Lauck 10:29:25 06/02/12 (4)
- RE: Jitter - SashaV 19:31:38 06/01/12 (0)
- RE: Jitter - Todd Krieger 16:26:34 06/01/12 (2)
- RE: Jitter - John C. - Aussie 14:36:27 06/01/12 (1)
- RE: Jitter - Bromo33333 19:58:25 06/02/12 (0)
- Glare? - sbrians 11:33:29 06/01/12 (0)