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5.1 to 2.0 downmix card?

Posted: Mon Feb 06, 2017 9:30 am
by w9wi
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:)

Re: 5.1 to 2.0 downmix card?

Posted: Mon Feb 06, 2017 3:15 pm
by davek
Ward Beck make a OpenGear card which might work for you .. model number is M6205A-3G

Re: 5.1 to 2.0 downmix card?

Posted: Mon Feb 06, 2017 3:52 pm
by PID_Stop
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.