5.1 to 2.0 downmix card?

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w9wi
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5.1 to 2.0 downmix card?

Post by w9wi » Mon Feb 06, 2017 9:30 am

Anyone know of a not-too-horribly-expensive device to do a downmix from 5.1 to stereo, preferably in the SDI embedded domain?

Our network receivers are sources on our router. Nearly all our *destinations* are 2.0 stereo. When we route a network receiver to any of these destinations... we don't get the dialog from the center channel.

I was hoping to find something like an OpenGear card, preferably that would handle this in the embedded domain, and given budgets, preferably for free:)
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Doug Smith W9WI
Pleasant View, TN EM66

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davek
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Re: 5.1 to 2.0 downmix card?

Post by davek » Mon Feb 06, 2017 3:15 pm

Ward Beck make a OpenGear card which might work for you .. model number is M6205A-3G

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PID_Stop
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Re: 5.1 to 2.0 downmix card?

Post by PID_Stop » Mon Feb 06, 2017 3:52 pm

w9wi wrote:
Mon Feb 06, 2017 9:30 am
Anyone know of a not-too-horribly-expensive device to do a downmix from 5.1 to stereo, preferably in the SDI embedded domain?

Our network receivers are sources on our router. Nearly all our *destinations* are 2.0 stereo. When we route a network receiver to any of these destinations... we don't get the dialog from the center channel.

I was hoping to find something like an OpenGear card, preferably that would handle this in the embedded domain, and given budgets, preferably for free:)
Many Cobalt cards have 5.1 downmix as an option; if you already have one of their cards in the chain (a frame sync, for instance), you can add that function. Our CALM processor cards (Cobalt 9985) also have the ability to detect when the input is 2.0 (mainly by the absence of audio on channels 3-6), and can automatically switch to a 5.1 upmix for the AC3 encoder, so the end user's audio always sounds right, whether the original content was 2.0 or 5.1, and regardless of what kind of setup he has at home.

Euclid
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Re: 5.1 to 2.0 downmix card?

Post by Euclid » Sat May 04, 2019 10:19 pm

IF you are already sending the source through a Miranda XVP-3901, XVP-1801, or EAP-3901 card, you can do the downmix there. I believe that you must buy the Audio Processing option to do this.

We already have XVP cards on all our ingest Omenons. Acquisitions can change the audio processing via an iControl server and a RCP-200 or an iControl Web page.

Although we do not have a stereo copy of the Main Network feed on the router, we do have a both 5.1 and 2.0 outputs of our main production control room. The 2.0 output is created in a EAP-3901 card.

If your must buy any of these cards you may find these cards are not cheap!

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