XLR Audio to SDI AES/EBU on ATEM Television Studio

My client is a belly dancer and we are looking to set up a streaming TV studio. SO far we have a few HDMI cameras with the ATEm TV Studio. Right now my concern is getting the audio into the process.

I am looking to take audio from a basic audio mixer and run it into the ATEM Television Studio Aes/EBU in.

I am looking at getting the
Mini Converter HDMI to SDI - 295
or
Mini Converter Audio to SDI - 495

The ultimate question is can I use the HDMI to SDI and just use the audio.... this will save me 200.00
or
Does it matter if I use the HDMI to SDI. I mean I only really need the audio and I am looking to save as much money on this project as possible.

Will the SRC2496 connect straight to the ATEM TV switcher AES input without the impedance transformer? Say using an RCA to BNC or XLR to BNC cable without the transformer in-line?

I was reading this thread and the couldn't tell if the transformer was used in the setup or not.

Will the setup fail or should I expect problems if I'm not using a 110-75 ohm transformer? Or is the transformer just being used as a format changer (XLR to BNC)?

You did not reveal the rest of the signal chain. Do you really NEED audio embedded into the digital video stream? What is the destination of the video from the ATEM switcher? Does it require SDI or HDMI? Or are you running analog/composite? Does the destination require embedded audio, or will it accept a separate audio source? (Such as line-level audio from your mixer?)

You can feed AES digital audio into the ATEM using a less expensive option such as the Behringer Ultramatch Pro SRC2496 (~US$150). This method has the added benefit that the ATEM will handle syncing the audio and video together. The external mini converters cannot do that. Of course, if you are sending video/audio over the internet, chances are that you audience won't even perceive an A/V sync error of a few frames. The typical performance of the internet will completely swamp that small error into insignificance.

Yeah, Behringer doesn't have the greatest reputation, but I am beginning to wonder about BMD here. Their chronic lack of even basic/minimal technical documentation significantly reduces the value of their equipment IMHO.

I resent everyone's resentment to the mention of "business practices". Everything that we buy today is "too cheap", and cannot be manufactured in the US or Western Europe because it would be "too expensive". So everyone on these forums (ALL the forums - and Quantel doens't have a forum here) is buying electronic products from slave labor or child labor - so don't you all be so "almighty" - you know that the only way to make fantastic products for $100 - $300 is if someone is suffering. Behringer does it, Foxcomm (Apple) does it - so give me a break. You want to protest - buy Quantel. No one is suffering at Quantel.

bob Zelin
(Richard - you are right - you can just take the 75 ohm RCA output and feed the ATEM - great simple discovery !).

I assume you are refering to Behringer copying the Mackie series of mixers and speakers (which they absolutely did, and obviously, got away with).

But just like Wal-Mart - if you make the same product for 1/3 the price, we American's don't care who gets screwed, as long as we can get it dirt cheap. I know very well that a Behringer mixer won't last more than 3 years - but I keep installing them, because people want cheap.

With that said - the SRC-2496 is one of the few products that are not copied from another manufacturer - and it's cheap - and it works pretty well.

bob Zelin

[Bob Zelin] "(Richard - you are right - you can just take the 75 ohm RCA output and feed the ATEM - great simple discovery !)."
Bob, Bob, Bob. Apparently you forgot about and did not return to this thread:

http://forums.creativecow.net/thread/124/876876

Your response in that thread probably sold a lot of Behringer SRC2496's (including one to yours truly), as it was the first discussion of how to get sound into the ATEM TVS, and I think you gave a pretty comprehensive answer (although the XLR to BNC suggestion turned out to be needlessly complicated).

I hope that I in turn got a few people buying RCA to BNC (and hopefully other) cables from monoprice. Their quality/value ratio is off the charts.

Is there configuration of the TElevision Studio that needs to be done in software to have the unit receive the digital audio signal from the Behringer? I have the unit connected using a XLR to BNC Transformer adapter and I also tried putting a RCA enc on the BNC Cable to no avail. I am not seeing audio in the black magic software.

Are there specific setting on the Behringer that have to be made? Please advise?

Thanks!

I've had success with Behringer DEQ 2496 Ultracurve pro which has XLR Left & Right Inputs and an AES /EBU stereo output and it also has an audio delay of 300ms.

I understand that 110 ohm cable is better than standard audio cable (75 ohm) so I'm awaiting delivery of 110 ohm XLR to BNC cable. In the meantime, I soldered up a short length of audio wire I had lying around and it sounds fine.


Incidentally, for my setup the DEQ 2496 audio delay appears to be 14 frames -- more than the 300ms (10 frames at 30fps) audio delay built into the Behringer DEQ2496, so I'm borrowing a Rane audio delay to see if that will get it into sync. I'm running 2 Canon HM40s and a Canon XA10 - picture is excellent -- image quality from all 3 cameras is very similar.



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