wordclock and spdif?

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digitalaudiosoft
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Post by digitalaudiosoft »

astroman wrote: and it doesn't matter on which type of cable it's transmitted - a BNC cable doesn't make it more precise...
cheers, Tom
of course yes,bnc cable is important....you have to learn better on cable impedance tom...you will find info on the net.
in my topic on tech forum ,long distance are certainly responsable to clock problem via a symetric aes cable.which is made to be used on long distance...

so,do you think you can send a wordclock to 50 meters via a simple aymetric cable ? of course not...

i have tested some audio cable for thomson,and you can't imagine what i have hear...some have less low freq,other cut hi...it was funny :-)

garyb like me have talk about wordclock is made for...and we have a common point, he has studio and lots of numerical hard to sync with a unique clock,so we have to use wc...that's simple isn't it ?

about "always"confusion of sync smpte/ebu and wordclock,i can see that you have not understand wich one is use to...
so,like we say with garyb : wordclock for multiple num hardware to be sync with , and smpte/ebu for video and audio timecode and ssl automation (ebu).to be sure to have same offset btw video and audio...

maybe my story about wc is to complicated or not enough clear...

eric
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Post by dawman »

I purchased some of these cables 4 recording purposes, and use top shelf Monster cable 4 live work. There is a difference on high quality recording consoles when these are in use.

www.zaolla.com + www.barbetta.com = FAT
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astroman
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Post by astroman »

digitalaudiosoft wrote:...
of course yes,bnc cable is important....you have to learn better on cable impedance tom...you will find info on the net.
in my topic on tech forum ,long distance are certainly responsable to clock problem via a symetric aes cable.which is made to be used on long distance...

so,do you think you can send a wordclock to 50 meters via a simple aymetric cable ? of course not...
ooohh, sorry I forgot that he runs a 2500 square meter establishment ... :o
I was about to add a '... within reasonable distance...' but considered it superfluous, as most readers have to get along with just a fraction of the real estate you mention ;)

cheers, Tom
digitalaudiosoft
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Post by digitalaudiosoft »

astroman wrote: ooohh, sorry I forgot that he runs a 2500 square meter establishment ... :o
I was about to add a '... within reasonable distance...' but considered it superfluous, as most readers have to get along with just a fraction of the real estate you mention ;)

cheers, Tom
tom,i understand you always want to have the last word,but your answer is more than stupid...all the members who are reading our post want to know what a wordclock is,why bnc cables are use instead of simple cables !
i give an information and you joke on it...yes ! are you proud of you ?
but, have you a real idea of the distance of cables there is in a true studio, not a pocket studio like yours ,but a real big one with ssl 48+8 stereo channel ,5 converters,48 mic lines,a small rack with lots of comp,eq,reverbs...?do you know why bnc cable exist,why good symetrics cables exist,why ssl or neve exist,why tad,crown,westlake exist...why sound engineer exist...why there is a -18dbfs normeand another one set to -9,another to -10 or -20...,what is a clock problem,what is a good reverb...why there are forums ? ..no,this one, i'm sure you know what forums are made for...!
jeff was thinking he has to use a wordclock,so now, he has his 2 answers ...garyb and mine (the same) and one from api's support saying that the api a2d do not need clock and that wordclock is only a myth.
as you like topic style "what's wrong" maybe this one should be :" whose wrong ?"
anyway ,like for das "what's wrong topic",you and only you are always wrong when you proove yourself that you are not master in one domain...
all your answer are not talking about jeff's problem...and i don't understand why...

cheers,eric
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astroman
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Post by astroman »

calm down, Eric ;)
I had the impression that Wired was unclear about the bold statement in the quote below
Wired wrote:the manufacturers data for api a2d has to have a 20-26mhz on bnc and minimum 3vpp for the unit to turn on,
...snip...
..Api support then told me that the ext clock does help on the d to a side , and that is where someone will hear , say monitoring, , WoW! what a difference when i buy a wordclock, they are just listening to their monitoring environment, not the audio they are recording within their DAW, ...so i do not need a wordclock, api support saved me money,
all I did was to explain why clock precision matters for conversion quality, and I've clearly expressed that in my answer.
I never claimed to be involved with his original problems, but found it appropriate to extend the context, as these questions are frequently asked.
You are welcome to prove my original answer wrong, if you can... ;)
Just don't try to play the moderator and forget about to talk me into some nonsense like in this 'That's wrong' thread - I made that mistake (to remove my answers and get down on your insulting level) only one time.
I gave a focussed and precise answer to the quote above, it was you to extend it even further into large studio cabling and such...
Btw I've dealt with enough networks to know about high frequency cabling ;)

cheers, Tom
digitalaudiosoft
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Post by digitalaudiosoft »

Btw I've dealt with enough networks to know about high frequency cabling
so ,you are software developper,sound engineer,network engineer,able to devellope a sdk creamware for yourself,musician,forum professional....whoa !
like george clooney says for nespresso : WHAT ELSE ? :wink:

everybody here knows that you know all on all...you are so funny..

i don't have your chance tom,i'm only a poor musician who play bass for poor french stars,i'm a poor dev for creamware and fairlight with poor devices ,i'm a poor sound engineer who have recorded live dvd in our poor olympia for a poor star...
i go out now to buy a gun...i'm sad...that's the end for me...my life is very hard to live...hope ,i will be good to find my head with the gun :wink:
poor black french humor of course !

peace....

cheers,eric
Wired
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avalanche!

Post by Wired »

all you guys must make good money to be able to talk all day. , i wish i had your job...... But my situation does not use video. So my simple set up has an A16ultra (for all analog ins to daw), and an api, and of course scope to sync up. ..However, i don't have clicks or pops, and gary, the api has only bnc in, it is not a wordclock generator at all, and api never said its the best clock in the world, he said that peoples perception that a wordclock is invaluable especially on the a to d side is a myth , there is no audible quality (unless your syncing the world up), ..where it is handy is on the d to a side if you want to go out your daw for monitoring or whatever.., it tightens that up a bit. An engineer on gearslutz also brought up this point once , that its better to have the "converter and the clock on the same unit, like apogee does otherwise more compromise can be introduced. Its ok for me, there is still a clock in the api converter as the final downstream piece.this is from gearslutz member

"external clocks have more jitter, thats just the way it is.
with better deisgned ad/da external clock is best used to sync multiple clock sources

and a straight word clock t-bar daisy chain is preferable to that if possible.

if it "improves" your converters sound, there was something really off about the design of your converters. so a delta , yeah would be improved .

I've hooked up converters to different clocks and it does sound different, but better isn't always the case .

The best sound i've gotten out of any decent converter is when its clocked to itself

a good integrated design is always better.

the lucid is probably a good choice or the BL mod.

Whatever is your main and best converter clock the rest off of this.
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garyb
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Post by garyb »

Wired, i don't think you understand me.

first of all, i don't care what they said in the gearslutz forum. :) external clocks via bnc with proper cables don't have inherently more jitter than the average ad/da even if they don't necessarily sound better or worse, it's true.

second, i'm not against you, and i think the api clock is fine(the scope clock is fine). i don't think you need wordclock. (the api has superclock not wordclock anyway!!!!)

third, whether you use wordclock or not has nothing to do with video necessarily. i don't use video, but i want to keep my converters, dat and daw synced and i don't want to be stuck using the dat's clock. wordclock allows me to do that and use a very accurate clock while doing that.

fourth, the same advantages of a better clock that will "tighten" the d/a will also do exactly the same thing for the a/d, obviously. a/d-d/a both are helped by a good clock, which is not to say that any particular a/d or d/a doesn't have as good a clock as can be already in it.


fifth, i never suggested that you use the api as a wordclock generator. i suggested that you try using the api to clock your system via s/pdif. you'd have to experiment to find out, but it's possible that the api's clock is better than the a16's or the card's. maybe, maybe not.

and last, yes it is good to be able to type on the forum. i'm not rich, but i piad my mortgage again this month.......... :P
hubird

Post by hubird »

this and that other clock thread show once more that communication skills are an absolute condition for all other skills...
A sane ego will be of help also.

Don't hope we will see this kind of absurd and nonsensical conflicts every three days or so.
We just had a few nice days here again...
Wired
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ok

Post by Wired »

i understand,.. thats exactly what i do i use , the api clock as master via spdif, .no clicks or pops, .my misunderstanding, .., i was told that if a converter/clock is the last stage of your audio downstream, its at that point where everthing is corrected or tightened up, so i think we are saying the same thing, and i can see how a word or clock can benefit with adat, my issue is that i don't need a superclock right now, ...the only place i can see where a wordclock (or super) may help is when i pass audio from a16u to master comp, then to api and of course then out spdif to daw, its that stage from the a16u to master comp (analog),
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garyb
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Post by garyb »

sure, and the a16 can be slaved to the api via adat which is fine.
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