-3dB Pan law/ Gain drop after bounce clips

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Fearful Symmetry
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2005/11/28 11:15:01 (permalink)

-3dB Pan law/ Gain drop after bounce clips

Just upgraded to 5.1 from 4.4 and this is still with me. Is there a technical imperative here, the point of which escapes me? Why would one want clips to drop in level by 3dB following a bounce? A non-rhetorical question.
Thanks for any light
FS
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    jmcelroy
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/28 11:52:16 (permalink)
    I'm really facinated by the differences in the pan laws (for no real reason, I guess) and would also love to know the answer to this.
    #2
    danhazer
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/28 12:38:29 (permalink)
    Why would one want clips to drop in level by 3dB following a bounce?

    Because if the track you are bouncing is panned, then the pan law is invoked. The resulting new track will reflect what you are hearing, and you are hearing the pan law. In the case of the -3dB pan law, bounced clips which are panned will be -3dB. The clip will have a different physical appearance, but will sound the same as the original.

    Thanks,

    Dan Monaghan
    #3
    Fearful Symmetry
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/28 12:43:46 (permalink)

    ORIGINAL: danhazer

    Why would one want clips to drop in level by 3dB following a bounce?

    Because if the track you are bouncing is panned, then the pan law is invoked. The resulting new track will reflect what you are hearing, and you are hearing the pan law. In the case of the -3dB pan law, bounced clips which are panned will be -3dB. The clip will have a different physical appearance, but will sound the same as the original.

    Thanks,

    Thanks Dan.
    This, I understand - but should it happen to a mono clip panned center? It does. Please test it out for me 'case I've got a cupboard full of boggarts!
    #4
    danhazer
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/28 13:02:55 (permalink)
    but should it happen to a mono clip panned center?

    I can't see why that should happen. I'll check it on my system and get back to you.

    Thanks,

    Dan Monaghan
    #5
    newkulturstudios
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/28 21:01:02 (permalink)
    You knew I had to chime in, right?
    I'll try to word myself better this time around...


    In 5.0, applying a Bounce to Clip on a mono clip causes the gain to change if the panning law is anything other than one of the 0dB options. On testing, it seems if there is any mono context in the chain, (be it the clip and/or the track) the clip bouncing will follow the pan law. The problem is that on a mono clip in a mono track, the only desired effects when bouncing are to apply any clip FX, fades, envelopes, and combining of selected clips... we don't want the volume of the clips to shrink.

    In this scenario, any clip pan envelopes should be ignored (even though using any would be pointless anyway), since the TRACK is set to mono, so therefor the pan law should have NO bearing at the clip level, since it is being applied at the track level. It is redundant to do so.

    This happens to mono clips on stereo tracks as well, but the gain change here is wanted... the only problem is that the resultant clip (from bouncing) should be a STEREO clip. That would prevent it from being effected by the pan law again as it's played through the stereo track after the bounce. (Note: if a track is set to mono, bouncing a stereo clip in it results in a mono clip. However, bouncing a mono clip in a stereo track currently does NOT, but SHOULD, result in a stereo clip.)

    I'm no programmer, but I would think all you'd need to do to fix this would be to add two conditional lines to the Bounce to Clip code:
    - IF the track is set to mono, do not apply the pan law during the bounce, and make the resultant clip mono.
    - IF the track is set to stereo, apply the pan law during the bounce, and make the resultant clip stereo.

    Chris Hooker
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    #6
    Fearful Symmetry
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/29 01:53:42 (permalink)
    You took the words right out of my mouth:-)
    Would you be so good as to CC the above the powers that be.
    Cheers & thanks
    FS
    post edited by Fearful Symmetry - 2005/11/29 01:55:48
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    danhazer
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/29 09:08:27 (permalink)
    Note: if a track is set to mono, bouncing a stereo clip in it results in a mono clip. However, bouncing a mono clip in a stereo track currently does NOT, but SHOULD, result in a stereo clip.

    Swoosh!!! Right over my head on this one...

    What do you mean by a track being 'set' to mono? And what do you mean by 'bouncing a stereo clip in it?' These are not terms I am used to hearing.

    Here's what I DO know.

    Bouncing a mono clip while the interleave switch is set to mono = mono NEW clip.

    Bouncing a mono clip while the interleave switch is set to stereo = stereo NEW clip.

    At least that's the way it works in a freeze operation - I assume a bounce would follow suit (I think I mentioned before that I almost never bounce anymore now that freeze is available).

    As far as the arguments you guys have about the reduction in volume of bounced clips if pan law not equal to one of the 0dB options; I still have not tried it for myself - but I will and I'll get back to you. I've never experimented with pan laws before. I've always been able to get what I want out of a mix with the default one - and I've never had to worry about a project that I get from someone where they specifically used a different pan law for me to worry about...

    Thanks,

    Dan Monaghan
    #8
    newkulturstudios
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/29 12:58:39 (permalink)
    ORIGINAL: danhazer

    Note: if a track is set to mono, bouncing a stereo clip in it results in a mono clip. However, bouncing a mono clip in a stereo track currently does NOT, but SHOULD, result in a stereo clip.

    Swoosh!!! Right over my head on this one...

    What do you mean by a track being 'set' to mono? And what do you mean by 'bouncing a stereo clip in it?' These are not terms I am used to hearing.

    "track being 'set' to mono" = the track's interleave switch is set to mono.

    "bouncing a stereo clip in it" = applying the Bounce To Clip function to a stereo clip which resides in a track with its interleave switch set to mono. (While I for one almost never have a stereo clip in a mono track, since if I record something in stereo, I want it in stereo... I tried this just to test the Bounce To Clip functionality in all possible scenarios.)

    Here's what I DO know.

    Bouncing a mono clip while the interleave switch is set to mono = mono NEW clip.

    Bouncing a mono clip while the interleave switch is set to stereo = stereo NEW clip.

    At least that's the way it works in a freeze operation - I assume a bounce would follow suit (I think I mentioned before that I almost never bounce anymore now that freeze is available).

    Freeze does produce the correct mono/stereo version of a resultant clip (based on the tracks' interleave settings), but unfortunately, Bounce To Clip does not.
    ...Also to note: Freezing a track with its interleave switch set to mono results in the gain drop as well.

    The only thing wrong that I can see with my recommendation for the stereo/mono format of a bounced clip, is as in an example scenario Ron K gave (paraphrased here, so room for error):
    Tracking a guitar in mono, but placing it in a stereo track with other guitars (to use the same track effects), and panning the guitars to different positions via clip pan envelopes... Bouncing To Clip on only one guitar in this track would result in a stereo clip, making it the odd man out in this track.

    Personally, I always put separate guitars on separate tracks, to EQ and compress, effect, etc. differently... but I'm sure there are some people out there that might put them in one track. lol - It's either aggrivate one set of users, or change it and aggrivate another set.

    How about some others chime in, and give their preference?

    Chris Hooker
    Engineer - New Kultur Studios
    www.christopherhooker.com
    #9
    stevec
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/29 13:48:04 (permalink)
    Tracking a guitar in mono, but placing it in a stereo track with other guitars (to use the same track effects), and panning the guitars to different positions via clip pan envelopes


    I tend to do that...Not always, but often enough. And I usually will have some type of panning going on. It's mostly a screen real estate thing for me, though CPU comes into play too since the clips share the same FX.

    SteveC
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    #10
    newkulturstudios
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/11/30 01:42:36 (permalink)
    Shoot, I guess you wouldn't be one for my proposed method of reworking the Bounce To Clip function then, hunh?


    (...and... bump)

    Chris Hooker
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    newkulturstudios
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    RE: -3dB Pan law/ Gain drop after bounce clips 2005/12/01 17:07:19 (permalink)
    Bumping to see if anyone else wants to give their preference, thoughts on the proposed fix.

    Chris Hooker
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    #12
    droddey
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/01 22:30:37 (permalink)
    BTW, this is STILL the case, and it just drives me crazy and seems completely wrong. There's no good reason for a bounce to clips should apply the pan law. It's almost always being done to consolidate clips and such. I'm so tired of not realizing until too late that I've whacked 6 dB off of a track. I really wish that they would either change this or provide some other 'consolidate clips' type option, assuming that that hasn't already happened.

    Dean Roddey
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    batsbrew
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/04 12:12:04 (permalink)
    what happens with this, when you bounce tracks with the 'what your hear' setting?


    aren't you hearing the panning correctly balanced at that time?
    and this is what you get on bouncedown?

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    brundlefly
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/04 21:28:52 (permalink)
    BTW, this is STILL the case, and it just drives me crazy and seems completely wrong.



    I just reported something like this recently against X1 with mono soft synth tracks, but I found problems even with Pan Law set to 0dB Center:


    1. A MIDI-driven mono soft synth output gains 3dB in the meters (and audibly) when frozen, though the waveform picture peaks at the correct level in the track scale (i.e. the level that was shown in the meters before freezing).


    2. If you bounce the frozen track to another mono track, the waveform picture gains 3dB, so it now matches the actual output level.


    3. If you bounce the synth track to another mono track before freezing, and then freeze the synth track, the bounced waveform appears to have the same level (3dB too high), but the track plays back 3dB lower (i.e. at the same level as the synth track before it was frozen).


    If you change to a -3dB Center pan law, I think you get the same relative differences, but everything is 3dB lower.









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    droddey
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/06 00:04:42 (permalink)
    I can see bouncing to tracks, though there should definitely be an option to have it ignore pan law when you do that as well. But to do it (without option to turn it off) even when just consolidating the clips of a track after comping or punching in, that makes not sense at all. 

    But either way, there should always be an option not to apply pan law, because so often it's just not desired. It's often not the case that final pan positions is not known when tracks are bounced anyway. They may just be getting a run through outboard gear.
    post edited by droddey - 2011/08/06 00:05:46

    Dean Roddey
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    batsbrew
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/06 15:23:05 (permalink)
    i bounce to track, using all automation and everything...

    that way, what i hear, is what i get.

    if i do a moving left to right pan on a track, after bounce to tracks using 'what you hear', i get exactly my mix as i want it.

    the pan laws, are irrelevant at that point, because i chose the pan, and the volume it was set at, for the mix, and the bounce is faithful to that.


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    gustabo
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    Re: RE: -3dB Pan law/ Gain drop after bounce clips 2011/08/06 16:37:01 (permalink)
    When I freeze a soft synth, the resulting audio is always hotter by about 3dB.
    How do I keep it the same, frozen or unfrozen?
    This has been bothering me for quite a while.


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