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Odd Audio Behavior

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Michael W. Towe
Odd Audio Behavior
on May 2, 2013 at 7:22:44 pm

So I have an interviews that I am cutting and I am going it in a compound clip because it will get placed in multiple timelines. The audio is 4 channels of Mono, which I am killing 3 of, and just using the best channel. I drop an EQ and compressor on it and set the level to average at -20db all is good. Now when I drop that compound clip into a project I find that the audio now has to be boosted by 5db to get back to the average -20db that I had in the compound clip. Any ideas why levels in a project would be different from the compound clip?

And for extra credit... My broadcast specs call for a peak audio level of -12db. No problem right? Just drop a limiter and set it to -12db. But hold on, the limiter in X only lets you limit down to -10db. Any one know how to get the limiter down to -12db?

Michael W. Towe
President M2 Digital Post
http://www.m2digitalpost.com


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Nick Toth
Re: Odd Audio Behavior
on May 2, 2013 at 10:37:46 pm

I can't replicate your compound clip problem. If I set levels, compound and then copy the compound into another project the levels are consistent.

I would edit the interview in a project and then compound the completed edit and copy/paste into the other projects.

As far as your limiter question, you should be adjusting "gain" which goes down to -20. Where you set that depends on what the level of the audio is in the first place. There can be interaction between the different settings.

anickt


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Michael W. Towe
Re: Odd Audio Behavior
on May 3, 2013 at 12:49:12 am

Hey Nick,

Thanks for the response. Just a follow up from my end...

So at first I thought it might be a workflow issue as I was creating an empty compound clip and then editing the footage into it. Then I was applying the compressor and adjusting it, then dropping the compound clip into a project. As explained I we having to bump the audio by +5db to get the levels to match.

You were suggesting create a project, then edit the footage in, add and adjust the compressor and then compound clip it. If I do this the exact opposite happens. Now I have to drop the audio in the compound clip to get it to match. But wait it gets better... If I don't drop the level of the compound clip, but drop it back into a project the levels are now back to where I set them, even though the compound clip is +5db hotter. Confused yet?

In short, I have a consistent 5db mismatch from compound clip to project. Which way that miss match is depends on when I created it. If created in a compound clip and dropped into a project, the project is -5db. If created in a project and compounded, the compound clip is +5db

I have tried this on 2 system here at my shop and it behaves the same way on both. I would love another data point on this if someone else wants to give it a shot.

Michael W. Towe
President M2 Digital Post
http://www.m2digitalpost.com


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