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Check out this site on jitter. I was able to pick the reference file fairly easily.
Cut to razor sounding violins
Follow Ups:
[Edit Friday Nov 26th]: - So I listened to these guitar tracks and they don't sound hugely different to me but I'm not a self proclaimed golden ear. Please let us all know if the tracks were obviously and significantly different. I admit that I didn't sit in front of my system painstakingly straining for audible differences.[From Thursday Nov 25th]: - Downloaded all the tracks, created an album, named it appropriately, added album art, added it to my Roon Library. I'll mess with it after turkey if I'm still awake! Happy Turkey Day!
The Asylum Jitter Album in Roon
Edits: 11/26/21
Originally i struggled but one track just sounded right and the other ones were just off. I doubt i could have reliably picked out the file everytime. But that chain has 6 boxes after the switch that process the sound. When i listened to my chain with just one box after the switch it was alot more clear. The reference file was more 3d especially his breath. And the decay of the guitar was more 3d and clearer. It was a more real and enjoyable sound. Iirc the fingers were clearer too
Cut to razor sounding violins
This means you have ears and take audio seriously. Ohers just
file em away!
Hey Fred,
I do take it pretty seriously. Jitter is fascinating because some claim is doesn't impact the sound at all and others certainly see it is a thing. Having a test where you can hear it is illuminating.
Cut to razor sounding violins
When you swap the clocking for better ones, you hear an instant improvement. The same when a good relocking scheme is introduced whether it is spdif or usb
I thought I was doing OK in that area. Though when I explained my results to that guy he said my Big Ben was jittery and would colour the sound.
I thought the BB was decent. Been using it to transition from the network via toslink to electrically isolate and reclock before the dac.
Soon I will have an all in one source where the computer and ethernet will be out of the equation.
Why don't alot of inmates get what you are saying about clocking?
Cut to razor sounding violins
BB is ok but it has a lousy regulator chip. Replace if you can. Easy.
My take has been that some inmates are more interested in gadgets, not SQ.
The clocks in several modern DACs are outstanding for the task. Many external clocks targeted at audiophiles that claim incredible accuracy or ultra-low phase noise [jitter] are mostly snake oil in terms of improving SQ.Rubidium atomic clocks are accurate to a few parts in 10E11 and some audio companies will gladly sell you these "atomic clocks" for several thousand dollars. Antelope Audio's Rubidium based clock is only $6500 .
dCS will sell you their Vivaldi Master Clock based on an Oven Controlled Crystal Oscillator (OCXO) for only $17,000 . Their Rossini Master Clock is only $9000 . OCXOs are generally a tier below Rubidium based atomic clocks and OCXOs are MUCH cheaper. So dCS will gladly sell you LESS for much MORE money!
Truth be told, you can buy accurate and extremely low phase noise Rubidium clocks and OCXOs "off the shelf" without pretty audiophile cases at huge savings but they don't come with audiophile marketing hype. In fact, none of the audio companies design their own OCXOs or Rubidium atomic clocks. They buy them "off the shelf" just like you can. Audio companies simply do not have the in house expertise. These are highly specialized components.
Excellent OCXOs about $300 - $500
Excellent Rubidium based clock about $1600
A fancier GPS disciplined clock. $3850 w/OCXO. $4800 w/Rubidium option.
Stanford Research Systems just happens to be a brand that I am familiar with. There are several others that make OCXOs and a few that make Rubidium based clocks. Efratom of Germany pioneered the commercialization of Rubidium oscillators (clocks), many of which are in satellites orbiting the earth today. I did some work for them in Irvine, CA when they were developing a compact hydrogen MASER. Efratom was later sold to Ball Aerospace.
Edits: 11/29/21 11/29/21 11/29/21 11/29/21 11/29/21 11/29/21
I recall a vid by ps audio where ted smith was basically saying rubidium clocks are not what you really want for audio. I don't know enough to judge. Maybe that "rubidium is better than ocxo" conclusion you have is not exactly correct and dcs is actually offering a better clock on the more expensive unit. It could be like judging a dac based solely on the chipset. Maybe there is more to it than just type of clock tech and dcs is not just putting in an ocxo and charging much more. If you have any evidence that is the case can you post it?
Some of these posts really sound like "a ferrari is snake oil because: corolla"
And do be careful. You are posting about products from a company that PAID YOU. In some peoples book that is shilling....
Cut to razor sounding violins
The re-clocking takes the presumption that the initial A/D clock was precise to where the jitter would be unmeasurably low..... The problem is that the precision of the initial A/D isn't perfect, quite far from it......
I think the key to getting the best sound is not necessarily more-precise clock intervals during playback, but preserving the jitter signature of the original A/D..... If the "jitter reduction" during playback does not improve the sound (the results seem to vary from recording to recording), it could be that the clock during the initial A/D wasn't precise in the first place.
I thought I noticed better guitar decay in one of the files but I didn't jot down which one. I wasn't sure if it was real or just my imagination.
Edits: 11/26/21
The track is a simple acoustic guitar..... I guess it could impact the overtones of the instrument......
I personally have found jitter to affect acoustic music at a larger scale, such as big band jazz or orchestral music.....
Will be interesting to evaluate this..... It will be several days before I get a chance to dig into it.
Cool. Cant wait to hear your results.
Cut to razor sounding violins
I did choose the correct file with the lowest jitter..... (The lowest jitter file was kind of obvious through the headphone system.)
I do not know exactly how the other four files equate to lower or higher jitter..... If the gain of the difference files is an indicator, I may have gotten those wrong.
Cool tk. Good job. I didnt really listen to the adjusted gain files.
Cut to razor sounding violins
Downloaded all the tracks, created an album, named it appropriately, added album art. I'll mess with it after turkey if I'm still awake! Happy Turkey Day!The Asylum Jitter Album in Roon
[Edit Friday November 26th]: So I listened to these guitar tracks and they don't sound hugely different to me but I'm not a self proclaimed golden ear. Please let us all know if the tracks were obviously and significantly different. I admit that I didn't sit in front of my system painstakingly straining for audible differences.
Edits: 11/26/21
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