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S/PDIF vs analog outs

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scientificharmony

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21

Wednesday, April 18th 2012, 11:16am

Yes, even if it does sound the same, from what ive read it does take some strain of the USB when using SPDIF for audio and USB for midi. Seems to work better for me...

Marc

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22

Wednesday, April 18th 2012, 3:15pm

Quoted from "scientificharmony"

Yes, even if it does sound the same, from what ive read it does take some strain of the USB when using SPDIF for audio and USB for midi. Seems to work better for me...


that's not true.
marc
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scientificharmony

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23

Wednesday, April 18th 2012, 10:08pm

It's not?

Well I have been informed otherwise. Maybe you can clear the post up that I created about audio clocks then?

Chris

dimgrim

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Thursday, April 19th 2012, 11:47pm

Of course, audio through USB and S/PDIF should sound the same. They are the exact same signal sent over a different protocol. So you should end up with exactly the same thing.
However, in the case of virus, USB integration is problematic with modern macs and pcs.
Therefore, S/PDIF gives you what USB should give you and it doesn't.

MarPabl

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25

Friday, April 20th 2012, 12:28am

Not exactly true...

Quoted from "dimgrim"

Of course, audio through USB and S/PDIF should sound the same. They are the exact same signal sent over a different protocol. So you should end up with exactly the same thing.
However, in the case of virus, USB integration is problematic with modern macs and pcs.
Therefore, S/PDIF gives you what USB should give you and it doesn't.

Well this is not exactly true :( S/PDIF will only have a copy or L&R Output 1, but with USB (and also analog outputs), you have up to 3 outputs to choose.

Marc

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Friday, April 20th 2012, 11:03am

Quoted from "scientificharmony"

It's not?
Well I have been informed otherwise. Maybe you can clear the post up that I created about audio clocks then?
Chris


chris, don't get me wrong but if i would clear up every post which contains wrong information i would have to clone myself at least once. USB, the way it's being used, reserves bandwidth no matter what's being send. even if you don't use an audio channel, still "zeros" are being transmitted. that's the way it works and that's why there is no difference.
hth, marc
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scientificharmony

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27

Friday, April 20th 2012, 5:41pm

Thanks for clearing that up Marc...

dimgrim

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Friday, April 20th 2012, 9:32pm

One small extra question to this topic:

S/PDIF seems to work nice for me. However, I get some clicks now and then, not frequent at all, but they do occur, maybe once or twice in a 3-4 minute long track. Also when I bounce I still have one-two clicks in my exports. I did not have those using the analog outs.
Any idea what could be wrong and how I could fix this?

muzikman2008

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Saturday, April 21st 2012, 1:21am

SPDIF (Sony Philips Digital Interface) is just a digital version of the analogue outs on the virus... using an Analogue (signal) to Digital chip... in its simplest form!... having said that... Virus IS a virtual analogue synth and is digital in every respect but modelled on analogue technology using digital models of the analogue circuitry of old synths... this is converted to an analogue line level output, and the signal is passed to the SPDIF output simultaniously. Whatever output you choose is determined by the Virus output settings.

Thats how i see it?? :S

No snobbery, simply logic!

nms

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Saturday, April 21st 2012, 1:33am

Quoted from "dimgrim"

One small extra question to this topic:

S/PDIF seems to work nice for me. However, I get some clicks now and then, not frequent at all, but they do occur, maybe once or twice in a 3-4 minute long track. Also when I bounce I still have one-two clicks in my exports. I did not have those using the analog outs.
Any idea what could be wrong and how I could fix this?
Do you have your interface's clock source set to S/PDIF? If not that could be the issue.

Also, on the topic of the audio being identical up to the point it either gets passed through as digital or converted to analog..... if memory serves, the well documented issue of unintentional slight pitch oscillation doesn't occur when using analog outs. Personally I just restart my DAW and Virus before recording to help get smooth operation from it and stick to USB outs

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