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#1
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LtRt louder than 5.1???
Hey guys,
I'm using the surcode minnetonka dolby pro logic II encoder for a documentary film mix that will be going to theaters and broadcast. I'm a/b'ing between the 5.1 mix, the decoded LtRt and the encoded stereo LtRt. The stereo sounds a few db hotter than the 5.1. The decoded LtRt sounds a couple db softer than the 5.1. This is pretty consistent throughout. Is this common? Is there a way people typically correct for it? Best, E |
#2
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Re: LtRt louder than 5.1???
That doesn't seem right, unless you have a whole lot of sound from the surround channels. Theater surrounds are set 3 db lower in playback level than the fronts, so surround channels would sound louder in the LtRt by 3db. The fronts, especially L and R, should be the same.
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#3
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Re: LtRt louder than 5.1???
Your right about the levels. The decode function is 3dB short of providing unity output. It's now an acknowledged bug and will be fixed very soon. Your recorded LtRt is fine. Raising the gain after the decode output 3dB will make things right until the fix is in.
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#4
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Re: LtRt louder than 5.1???
whoa,
Phone just rang and it was Minnetonka saying that the level fix update is on the way. So hang on, the fix is right around the corner. |
#5
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Re: LtRt louder than 5.1???
Thanks rbeggs. What's strange is I think the surcode plug in has had this bug for years. Strange no one reported it earlier... So I assume the fix will make all 3 sound relatively similar (5.1 vs ltrt encoded vs ltrt decoded).
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#6
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Re: LtRt louder than 5.1???
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#7
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Re: LtRt louder than 5.1???
No, its something I've noticed for years. I don't mix very often (more lately) and have only used it a few times on mixes that were pretty low budget. Given my inexperience with LtRt's I didn't report it myself until now even though I've always noticed it with the Surcode plug. I thought that's how it was supposed to be... !
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#8
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Re: LtRt louder than 5.1???
I use the stand alone Minne PL II encoder all the time (PC), and have for for years, and have never noticed this. If I set the level of the C channel to tone to what I mixed as in the DAW (-20), and make sure the other channels are at the same level in the encoder then I get an LtRt that plays at the same average level as the 5.1 mix it came from. Or am I missing something? I assume you guys are talking about the RTAS version of the encoder?
Philip Perkins |
#9
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Re: LtRt louder than 5.1???
I think it's the decoded LCRS that is off, not the encoded LtRt. I noticed this a couple weeks ago on a project, but though I was doing something wrong. I hadn't had a chance to check into it, so I'm glad this was brought up.
-Richard
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#10
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Re: LtRt louder than 5.1???
I have noticed this as well.
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