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  4. vienna ensemble pro clocking?

  • vienna ensemble pro clocking?

    K
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    Moin,

    VE pro works great ATM here, and I´m just wondering, how the clocking is done.

    When I connect two computers with audio interfaces, I set up one as clock master, and one as slave.

    Oviously there is no need for that when using audio over LAN with VE pro.

    Anyone who can elaborate that a little?

    Thanks

    Klaus
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    I asked the same question recently, with no response.  Anyone?  Just wondering if the master computer's instance of VE Pro buffers and reclocks or what.
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    I would understand if that's proprietary information and the company can't answer for that reason - no problem there at all - but I'm just trying to figure out if sending the same wordclock to my slave computers even though they are not pushing audio through their sound cards would make matters better or have no effect.  That's why I'm asking about reclocking - that obviates the need for a master clock signal, as it would remove all jitter incurred by the network transmission.

    So maybe someone could answer, "none of your business", or (more irritatingly) "what do your ears tell you?", or something?

    Thanks -

    Richard
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    When using VE Pro in server mode, you don't need to worry about clocking. When using VE Pro as a standalone and connecting digitally, you need to clock the same way as you would with any external digital hardware.

    DG
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    @DG said:

    When using VE Pro in server mode, you don't need to worry about clocking. When using VE Pro as a standalone and connecting digitally, you need to clock the same way as you would with any external digital hardware.

    With great respect, that isn't really an answer to the question.  It stands to reason that if a digital signal is leaving a sound card I would have to use a common clock in some way.  I know that the server system works without a clock as I have none in place and it seems to.  I want to know why I don't need to.  Thanks!
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    It's as much an answer as your suggested "What do your ears tell you?"  [;)]

    DG
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    @dragsquares said:

    With great respect, that isn't really an answer to the question.  It stands to reason that if a digital signal is leaving a sound card I would have to use a common clock in some way.  I know that the server system works without a clock as I have none in place and it seems to.  I want to know why I don't need to.  Thanks!

    The link between master and slave with VE Pro does not use a sound card, so there is no sound card to sync, which is why you don't have to concern yourself with a word clock - as there is no hardware involved (other than the network devices).
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    My saying the following...

    @dragsquares said:

    It stands to reason that if a digital signal is leaving a sound card I would have to use a common clock in some way.  

    ...means that I understand there is no sound card involved.  What I'm wondering about is this:  So a note event comes to the slave device over the network.  It causes the target Vi inside VEPro to generate digital words.  These then get squirted out of the ethernet port in a stream of packets and end up in the host app on the master computer.  At that point I'm assuming they are reassembled and reclocked to the host computer (otherwise there would be hideous quantization errors and heinous jitter etc.).  So that is why clocking the slave computer externally will have no impact on the sound, because the signal is reclocked upon entry into the master computer.  Since there is no A-to-D clock on the slave (only the clock that runs the CPU), there is no jitter to be introduced at that moment, and thus the clock of the master computer is the only one that can have any effect on the sound quality.

    Is this correct?

    Thanks.