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Old 08-28-2013, 09:43 PM
Kenny Gioia Kenny Gioia is offline
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Join Date: Aug 1999
Location: New York, NY USA
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Default Pro Tools 11 Tips and Tricks - "Comping Vocals"

To celebrate my newest tutorial release “Pro Tools 11 Tips and Tricks”, I’m going to be writing out some of my favorite Tips and Tricks from the series. Hopefully adding a few per week here on the forums until they’re all eventually documented.

This first one is “Comping Vocals”. The idea of “comping” or “compiling” vocals is to record many takes or passes of our vocal tracks using “playlists” in Pro Tools. These can easily be switched on each track using the little tab to the right of our track names. Simply record a vocal pass, switch to another playlist and record another pass. Do this as many times as necessary until you think you have the best possible pieces or “takes” to work with. I tend to use between 4 and 8 takes for my method. But there’s no rules here.

Pro Tools added a playlist feature back in Pro Tools 8 for comping and while it’s a pretty good system, I, unfortunately, never use it. Here’s my issue with it. There’s simply no easy way to hear the takes we’re going to choose from, in “context”. In other words, as we move through the song picking out our choice takes, I want to hear the previous keeper line “flow” into our newer options. This is a huge deal for me and I assume is is for others as well. At least it should be.

The human brain can and will easily confuse a good take for a bad take (or vice versa) if it’s following a sub par performance option that will never even be in the final product. If it’s not going to be in the final comp, why are we listening to it?

Now we could “try” to use the playlist method to hear our options in context, but that will involve hitting the solo button exactly as the next take is coming up. Unfortunately, there’s a slight delay before Pro Tools reacts to switching audio tracks so it’s close to impossible to get this perfect. And more importantly, we’re supposed to be listening for a great vocal performance at that moment. Not trying to switch takes during the playback in perfect sync. It’s unusably distracting.

Before Pro Tools 8, I devised a system using the “voice stealing” option in Pro Tools HD. It used to allow us to choose just one voice for many tracks, and only the highest track (in order from top to bottom) would play. Unfortunately, this doesn’t exist in the Native versions of Pro Tools so I’ve come up with an equally useful workaround.

This method requires two tracks. One will be our “Comp” track and the other will be our “Takes” track. The “Takes” track should contain all of our takes but not be expanded to use the playlist feature. Just the standard “waveform” view should be used. The “Comp” track should be set up the same way. In fact, we should duplicate the “Takes” track so that the “Comp” track is exactly the same. Volume, pan, plugins, sends etc. But don’t duplicate the Active or Alternate playlists. Uncheck those boxes. We won’t need the audio to be duplicated. Just an empty track with all the same settings.

Next, we’ll place the Comp track right above the Takes track so that we can easily move the best pieces to the Comp track, as we find them. Now the problem with this method is that we’re going to hear both vocal tracks playing back at the same time. That’s not going to work. We need to find a way to make sure that we’re only our hearing our “Takes” track, in the sections where there’s no audio on our “Comp” track. When audio is present, the “Takes” track needs to be muted.

The solution to this is to use “Side-chain Compression”. On the Takes track, insert a compressor. It doesn’t really matter which one we choose although the free one in Pro Tools (Dyn 3) works really well. Create a new send on the Comp track and name it “Side-Chain”. Make this send “Pre-Fader” and set it’s volume to 0vu. Go to the compressor plugin and set the ratio to 100:1 (or the highest it goes), set the Threshold to the lowest possible setting and set the attack and release as fast as they go. Now set the side-chain input on the compressor to be our “Side-Chain” buss that we just created and make sure that we turn on the side-chain function on the compressor. This compressor is now triggered by the audio on the Comp track. Even though it’s on the Takes track and that’s the audio that will be affected by it.

With this in place, whenever the Comp track has an audio clip on it, it will compress the Takes track during that time period to such an extent that it will be effectively inaudible. When there is no audio clip on the Comp track, the compressor will do nothing because it’s not receiving any side-chain signal. So it’s not being triggered to compress anything. The Takes track will play back normally.

We can now listen to each playlist on our Takes track and choose the best pieces for each phrase, line or syllable and cut (or copy) them from the Take track and paste them to the Comp track. If we’re using “command focus” in the edit window (little a…z button in the upper right corner) we can use one key to perform each part of the operation. Select the phrase we like, hit “X” to cut (or “C” to copy) then hit “P” to move up a track and hit “V” to paste it to the Comp track.

Personally, I prefer to use “Cut” instead of “Copy”. It makes it easier to see which take we used (as it will be missing from the section on that playlist) and if we go back to re-comp a line or two, we won’t accidentally be picking the same line again. Also, if we decide to comp a double vocal for certain sections, we can use the unchosen takes to choose from and we won’t even see the keeper takes because they will have been cut out of their playlists. Pro Tools’ comping feature only allows us to use Copy. Not Cut.

As we work our way through the song, we will always be hearing the audio on the Comp track first, unless there’s no audio pasted there. On those sections it will revert to playing back our Takes track instead. So during the comping process, we will always be hearing our chosen pieces flow into the next section that we’re working on. We’re hearing our unchosen takes in context to what will be happening just before. Which is a keeper take.

When we’re finished and we’re happy with our Comp track as a keeper track, just remove (or de-activate) the “Side-chain” send from the Comp vocal track. We can leave the compressor on the Takes track as we don’t really need that track anymore. I usually “hide and deactivate” it so it’s out of our way but can be used again in case we change our mind or if we need to create double vocal tracks from the unchosen lines.

We should also go back and clean up all the transitions from all of the pieces (clips) on the Comp track by trimming and adding crossfades for all of them. Command + F (On the Mac) or Control + F (On the PC) will automatically add cross-fades for us.

And that’s pretty much it. We now have a great vocal track that has all the best pieces from all of the passes that our singer recorded. I hope you enjoyed reading this. I hope you learned something.

The video of this process is on my “Pro Tools 11 - Tips and Tricks” video and I’ll be adding more of these tips in the coming days and weeks ahead.

Thanks for your support.

Kenny Gioia
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