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TOPIC: How to make "stereo" pair from mono?

How to make "stereo" pair from mono? 5 days, 18 hours ago #229512

  • simonhgr
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Hi all, I have some source material that has stereo tracks, and some patch material for that which has only a single mono track. How can I duplicate the one mono track across both A1+A2?

Re: How to make "stereo" pair from mono? 5 days, 18 hours ago #229518

  • hugly
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Hello,

There are multiple ways to duplicate tracks, drag and drop with Ctrl-key pressed and 'Auto track sync' disabled beforehand is one of them, but I wouldn't do it this way.

I'd suggest using separate tracks for stereo and mono recordings with the appropriate pan settings.
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Last Edit: 5 days, 18 hours ago by hugly.

Re: How to make "stereo" pair from mono? 5 days, 17 hours ago #229523

  • RWAV
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The following applies to the top two selected A tracks.

The destination track can be the one above or below the source track
All of the mark/parked destination section must be clear - have no clips in it
The source and destination tracks must be identical - so single track/single track
grouped Tracks/identically grouped tracks
With grouped tracks - if the user decides to undo hte action - it takes as many undo's as tracks in the group.

In the example below only a section is marked/parked - mark park the entire track would copy the entire track

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Under windows it's the Alt-k key combination
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Re: How to make "stereo" pair from mono? 5 days, 2 hours ago #229561

  • simonhgr
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Many thanks Hugly, RWAV, I'll try these out.

Hugly, can you elaborate on why I might benefit from the separate tracks? For background, my audio is essentially a single voice (mine), so it's mono and centered, though for no reason I know about other than perhaps "it's normal" all the material from my partner (who does most of the final output) has the track as a stereo pair, so I'm just trying to "populate" both A1 and A2 in the easiest way possible. Does that change your advice at all?

Re: How to make "stereo" pair from mono? 5 days, 2 hours ago #229564

  • hugly
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There are many reasons for suggesting to use separate track for mono and stereo recordings, from my point of view.

  • You gain the flexibility to pan the mono recording away fron dead center per track with the mixer. If you need different panning schemes, e.g. for dialogue, you can even use multiple tracks for that
  • It keeps your timeline better organized.
  • It avoids phasing issues caused by wrong alignment when copying.
  • It increases flexibiltiy when mixing.
  • Last, but not least, it's gold standard. As soon as you move a rough mix for mixing and mastering to external sound facilities the engineers there will thank for that.


However, as soon as everybody in the workflow chain agrees to duplicating mono tracks, whatever the reasons are, why not?
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Re: How to make "stereo" pair from mono? 4 days, 22 hours ago #229577

  • RWAV
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In production performers voice recordings are almost invariably mono - a body worn wireless lavaliere mic or a directional swinging boom mic dedicated to that performer while they are delivering lines.

Of course a mono track can be spatially positioned probably - more easily than a two track recording. Certainly when recording actors on a set one actually wants to avoid spatial positioning of the sound. The aim is a good clean noise free mono recording into which ADR recorded fix-ups are easily inserted as necessary - One can imagine commentary inserts into a voice recording in simonhgr's work might be a reasonably common requirement.

Inter-cutting between two or more 'stereo' tracks in a dialogue scene would be potentially weird with inter cutting stereo background sounds rather than one hearing single sound environment in which people are talking/conversing.

Spatial positioning left/right near/far - building a soundscape - is a task for the sound mixing suite - or if finishing sound in LW as a one stop shop - is anticipated and planned for but delayed until later stages of the editing process - the right time, for example, to put in the SFX library stereo office environment and position foreground voices into the virtual space.

In editing it is usual to have multiple mono tracks for actors' voices often those may set to somewhat preference left or right. - rather than fiddle L/R positioning an editor might elect to copy sections of dialogue to both - to center it.

User hugly is right to point out in LW dynamic L/R tracking of a voice in the soundscape is best done with the sound on two tracks. So the really easy LW option to copy sound tracks is important - and the ALT-k copy process avoid any misalignment.

The other common reason for doubling A tracks when editing might be to increase level without venturing into previously unheard areas of the noise floor

Keeping a pretty/organised timeline is not a justification often talked about for track-layout decisions, and depending on the scope of he production, the external sound facility is more likely then not to scrap all NLE level rough mixes and do their job professionally from the ground up.
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