Jitter and clocks

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Jitter and clocks

Рет қаралды 35,171

Күн бұрын

Ted Smith explains clocks and their importance in the audio chain. All audio systems run on clocks and the quality of those clocks contributes to one of the major problems in sound, jitter. How do expensive, specialized clocks like rubidium devices affect the jitter? You might be surprised at the answer.

Пікірлер: 50

@GriffinKirby 8 жыл бұрын

Explained it better than my textbook! Thanks for helping me get a few extra questions right on my final!

@johnh539 5 ай бұрын

My hat off. You can always tell an expert by the fact he does not fudge any part of an explanation.

@kwacked1 6 жыл бұрын

What a good explanation. This is the one thing that the bits are just ones and zeroes folks don’t understand.

@mrcgeraldes 6 жыл бұрын

What a simple and amazing explanation

@dihydrotestosterone 10 жыл бұрын

2 thumbs up!! this guy is very interesting.....a good teacher!!

@jonjett2584 3 жыл бұрын

dont know if anyone cares but if you guys are stoned like me during the covid times you can watch pretty much all of the new movies and series on InstaFlixxer. I've been streaming with my girlfriend during the lockdown =)

@maddensterling630 3 жыл бұрын

@Jon Jett Definitely, been watching on Instaflixxer for years myself :D

@koblongata 9 жыл бұрын

Finally... after participating/witnessing so much arguments about how could "fill in the blank here" matter if it is digital ...I wonder why there isn't an answer coming from someone with the knowledge, because I can hear the differences but why? and now a real engineer/audiophile master explains it... Thank you!!

@RodneyD 7 жыл бұрын

Clocks are important.

@johnyang799 6 жыл бұрын

Rodney D Digital is essentially power supply and clock.

@corystevenponzo7007 2 жыл бұрын

I have a Master Clock for my (4) 8 channel converters. I ended up using the master clock from my PCI soundcard as it has the ability to use a syn check with every converter. Ive read many say a dedicated master clock will get better results. I have a master clock and a clock distributor, but I'm going to clock over over ADAT for simple ease of use. Unless someone here tells me differently. I trust this guy over any one on any forum. Thanks-

@BurstNibbler 7 жыл бұрын

Very interesting, this is exactly the kind of technical video I'm looking for. I bought a Beresford Caiman SEG DAC with a linear 15v PSU and I'm very impressed with it. So good that my CD player is now relegated to being just a transport. I'm now interested in the various modes it offers - 1. S/PDIF clock signal, 2. optimized XTAL processing, 3. PLL clock processing mode and 4. DATA recovered clock processing mode

@AudioTalk 10 жыл бұрын

Thank you so much for this video! A fantastically clear explanation!

@CyrilleBoucanogh 5 жыл бұрын

So beautifully explained!

@richardjhgraham Жыл бұрын

THIS IS GREAT! Thank you!

@SyberPrepper 10 жыл бұрын

Love the information. Maybe I missed it in an earlier video but how have you overcome the jitter problem in your products? Did you get a vendor to build special components (crystal or whatever), or did you build specialized pieces to handle the jitter problem?

@SyberPrepper 10 жыл бұрын

***** Thanks for the clarification. Appreciate the sharing of information at this level and appreciate the lack of "sales" agenda as well. Great role model for other people and companies.

@FUFUWO 7 жыл бұрын

MIND BLOWN

@pracheerdeka6737 2 жыл бұрын

How to sync clocks with data on o percent delay

@ThinkingBetter 5 жыл бұрын

I don't agree with the assertion at 2:40 of "Jitter doesn't matter until you get to the very point of where you get from the digital to the analog". Well, how about the sampling jitter (analog to digital conversion) on the original digital master? The era of digital music started in the early 1980s and if oscillator jitter is such a big topic still today (which I will claim it is not with proper engineering), we should have some serious issues with recordings of the first CDs using digital sampling with 35 years ago oscillators, right? An audiophile person believing that he can hear jitter issues in modern equipment should easily be able to identify jitter issues in CDs from 35 years ago. Or what? :-) So which title of song from the early days in digital audio has audible jitter issues in the recording?

@johnholmes912 3 жыл бұрын

virtualy every early digital recoding as audible jitter

@newdeep19 2 жыл бұрын

I am a true believer of the existence of sampling jitter.

@9z4clb 6 жыл бұрын

Excellent presentation ....thank you sir!

@kamiltrzaska5173 10 жыл бұрын

great video, could you tell me please if the music played with the pure quartz frequency, without PPL would be better quality than for example played on a 2,4 ghz machine?

@astra004 6 жыл бұрын

Are those time based errors in the same range (or smaller, or larger) than analog time based errors, i.e. belt elongation, wow, in the groove accelerations of the needle?

@xof8256 5 жыл бұрын

Thank You

@MartinPHE 8 жыл бұрын

Nice information.

@memorial2k8 5 жыл бұрын

wow this was very informative

@dexadk 8 жыл бұрын

Excellent!

@380stroker 4 жыл бұрын

Can you explain why company "X" says that their rubidium clock is only used to stabilize or discipline your other quartz clock? Is this technique possible and does that method reduce jitter from the quartz clock? By the way, company "X" will never ever produce their product's jitter specs. Smells fishy.

@dihydrotestosterone 10 жыл бұрын

the 'directstream' mastermind finally revealed !! The Oracle of Boulder !!

@bloguetronica 6 жыл бұрын

Hi Paul. What is your opinion on a 10MHz reference clock with 461fs RMS of phase jitter? Is it usable for audio? The device has two synced outputs, by the way.

@DrinkWater713 5 жыл бұрын

The lowest value i´ve seen people reliably tell in blind tests is 0,2 microseconds, so 461 fs MIGHT be overkill.

@bloguetronica 5 жыл бұрын

That's what I thought. But I wanted to know the opinion of an audiophile on this matter. After all, I have low jitter OCXOs to sell. Those were built for lab use, but audiophiles may want them too, although they might not like the fast edges because it makes the sound too "fast".

@DrinkWater713 5 жыл бұрын

There are some audiophile dacs with jitter in the femtosecond range, like the Mola Mola (300fs). I dont know about the actual implementation of your clock on a system, but there is, however, a demand for clocks of this precision in the audiophile world.

@bloguetronica 5 жыл бұрын

There is no implementation. It is just a 10MHz OCXO based clock generator that I've made for lab use. It has two BNC outputs.

@hidjedewitje 5 жыл бұрын

@@bloguetronica How did you measure the Phase noise? 461fs is ridiculously low if you measure from 10Hz offset, but if you measure from 1MHz offset it is not too spectacular.

@user-ff9rx7kq2g 23 күн бұрын

Clean clean clean clean clean

@PedroBaker-b5d 2 күн бұрын

Thompson Jose Martin Patricia Wilson Kimberly

@TheMadComposer 10 жыл бұрын

lmao aaaaaaand screw you Antelope. That's basically what he said in the beginning hahahaha

@Leo-yn5fx 2 жыл бұрын

Definitely either add a ddc or use a streamer if you're using a beefy pc like me. Connecting the dac directly to the pc is horrible recipe for audio. It sounds like a like an fm station that's mistuned. That is what jitter is.

@pepe6666 6 жыл бұрын

oh MAN this is the cmos dead zone. it saves your ass some times, but yeah shit when ya put it like this. they must have some pretty damn precise tight tolerances.