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Dual Stereo audio from an Aja Io-La?
Is it possible to send a dual stereo signal out of an Io-La?
I’m looking to send channels 1&2 out of both channels 1&2 and 3&4 of my Io-La without the need to duplicate my audio tracks and assign their outputs from the Io.
Basically I’m looking to send a stereo mix of my time line to two locations at the same time via the Io-La. Dual stereo if you will.
Is it do-able?
Thanks in advance,
Tom -
7 Replies
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The io will not Duplicate and reassign your outputs for you.
You will have to set up this matrix via FCP. It is very easy to do.
Jeremy
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I have a sequence, set up to output 2 channels of audio thru the Io-La. The sequence has 8 channels of audio, panned either left or right. This will give me a stereo, mixed output from output #1 & 2 on the Io. Pretty straightforward.
If I create a sequence with four channel output enabled, I’m looking for a way to, for instance, send A1 to both Io output # 1 & 3 and to send A2 to channel 2&4 at the same time. If I look at the channel assignment dialog in the mixer window, it only gives me the option to “send” each audio track to a single output on the Io.
I’m outputting a long program via Compressor right now, so o I’m locked out of the program and can’t access the help menu at the moment. Can you give a quick walkthrough of the procedure to output dual stereo?
Thanks,
Tom_PS I hate late evening deadlines.
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Yes. Simply export your 8 channels as a stereo file. Bring that back in to FCP. Duplicate your timeline with the 8 audio channels, delete them. Place your stereo track in 1&2, and also 3&4. Alternatively, you can set the newly imported stereo mix on their own tow channels. Setup your audio matrix to output tracks 1&2 (or the 8 channels of audio) as stereo on outputs 1&2, then setup the imported stereo mix on 3&4.
Hope that helps.
Jeremy
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Thanks Jeremy. Actually that’s pretty much the way I was doing it as well. I was just wondering if there was an easier way to simply assign a track to two different outputs rather than a single one. I had been just duplicating the audio tracks and then reassigning the outputs, but the export/import method would certainly make for less tracks.
The reason I was trying to do this was to use the 3/4 outputs from the Io to feed a Tektronix audio level/phase meter without needing to DA the outputs. I got in multiple camera footage from a live concert that has several of the audio channels out of phase and I figured that watching the phase monitor would tip me off early that there are phase cancellation problems with a given clip before getting too far into the process. I guess setting up a simple calibrated audio DA would solve the problem and wouldn’t cost too much. I probably have an old Grass Valley rack down in the pile-where-things-go-to-die in the basement.
Thanks for the help!
Tom -
I hear you. The export and duplicate method shouldn’t take but a minute or two and you won’t have to resurrect the dead from the basement. 🙂
Jeremy
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Would this work and be one less step?
What if you simply made a new sequence and then dragged in your master sequence with the 8 audio tracks? Then, hold down your Option key to copy/duplicate audio tracks one and two to three and four before outputting to all four tracks via your Io LA.
This way, you’d get two additional benefits over Exporting:
1) No extra time or disk space doing this (which is minimal anyway)
2) If you ever make revisions in your master timeline (the one with the 8 tracks), it will automatically ripple through to the output timeline (with the duplicated audio, the way you’d like it to go through your Io LA).When I was linearly editing, by the way, I used master audio differently than the way you described. I’ve never done this with FCP yet, but I used to put the stereo audio on 1 and 2 (exactly how you described) but then I would put Narrator/SOT on 3 and SFX & Music (Mono) on 4. I’m just bringing this up because you might be able to take better advantage of the four audio tracks for easier possible re-editing down the road via the Io LA than dual stereo. If I had more than just a UVW-1800 (which is 2 audio channels only) hooked up to my Io LA, this is exactly how I’d master everything.
Just an idea!
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Thanks Pat.
That’s actually how I’ve been duplicating my tracks-Option/Shift + Drag to the new tracks.
I guess it works so I’ll just keep doing things the same way. Just thought there might be a more elegant way to do it.
Tom
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