Latest post Tue, Nov 28 2017 3:35 PM by Jeroen van Eekeres. 4 replies.
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  • Mon, Nov 27 2017 5:50 PM

    Dyn3 limiter compressor phase linearity.

    Dear All,

    This is not so much a media composer issue as a plugin issue. The issue is occuring at a customer of mine who is using MC 8.6.5.

    When applying a Dyn3 limiter compressor on 2 duplicated audio channels, A1 and A2 (where A2 is the duplicate of A1) and monitoring the phase relationship in izotope when A1 is panned left and A2 is panned right it is obvious the phase relationship between the 2 channels is completely gone crazy. If the channels are panned back to mid (mono) this results in a phasing effect where most of the time the high frequencies are cut off.

    The workaround is easy. (Why would one duplicate the mono audio in the first place if the audio sync is further left untouched. answer: I like working dual mono as I get 6db extra for free when mixing with music... No don't ask Sad)

    But now comes the weird part. Moving the tracks to A3 and A4 can fix the issue. That a compressor plugin is not phase linear with itself I consider a bug but ok, if the bug is consistent throughout its use... but no. It depends on the length of the clip, position in the timeline and/or sequence tracks it is applied to. That makes very little sense to me,

    Has anybody else seen this behavior of the Dyn3 limiter compressor plugin?

    Thanks. 

    Most of the MC/NC, Interplay, Nexis, ISIS, Unity stuff. [view my complete system specs]

    Avid reseller ACSR at Telmaco

    http://www.telmaco.gr/en/

  • Mon, Nov 27 2017 6:41 PM In reply to

    Re: Dyn3 limiter compressor phase linearity.

    Vaguely recall seeing something like that. Let me see if I can reproduce.

    Media Composer /w Symphony option | PT-HD | Win7Pro64 HP | OSX MBP | ISIS5000 | Nitris DX | Artist Mix & Transport & Color | AJA T-Tap | Decklink... [view my complete system specs]
  • Tue, Nov 28 2017 7:26 AM In reply to

    Re: Dyn3 limiter compressor phase linearity.

    Dankjewel Job, Appreciate it.

    Most of the MC/NC, Interplay, Nexis, ISIS, Unity stuff. [view my complete system specs]

    Avid reseller ACSR at Telmaco

    http://www.telmaco.gr/en/

  • Tue, Nov 28 2017 8:37 AM In reply to

    Re: Dyn3 limiter compressor phase linearity.

    Tried, but cannot reproduce -- but admittedly, I' m on 8.9.1. Tried both AudioSuite (two renders, or duplicated render) and RealTime AAX.

    Pretty sure I came across this issue at some point. But I usually avoid doubling up tracks like this.

    Media Composer /w Symphony option | PT-HD | Win7Pro64 HP | OSX MBP | ISIS5000 | Nitris DX | Artist Mix & Transport & Color | AJA T-Tap | Decklink... [view my complete system specs]
  • Tue, Nov 28 2017 3:35 PM In reply to

    Re: Dyn3 limiter compressor phase linearity.

    Hi Job,

    Thx for trying. In my case I see the issue with realtime AAX.

    To open a case or not to open a case, that is the question. It's exactly this ability of being able to reproduce or having a determining factor that makes me believe avoiding doubling up tracks is the best practical approach. However there are these 'editors' and their habits... Confused 

     

    Most of the MC/NC, Interplay, Nexis, ISIS, Unity stuff. [view my complete system specs]

    Avid reseller ACSR at Telmaco

    http://www.telmaco.gr/en/

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