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| Using Region Groups In Pro Tools 7 Pro Tools Notes & Technique Published in SOS October 2006 Technique : Pro Tools Notes The new Region groups feature in Pro Tools 7 enables us to work with multiple Regions as though they were a single object. In this month's workshop we also take a look at two new training resources from Digidesign.
A Region group is a collection of any combination of audio and MIDI Regions that looks and acts like a single Region. Region groups can be created on single or multiple adjacent audio, MIDI and Instrument tracks. They can be thought of as 'containers' for Regions, which can be manipulated just like any 'normal' Region. Some edits will affect all the Regions in a group, whereas others, such as Trim, only apply to the boundaries of a Region group. Region groups are very useful for temporarily 'consolidating' a bunch of Regions that might have been created by the use of Beat Detective, or grouping parts or sections together — for instance, if you have a brass section and want to copy it from one chorus to the next. You could use Consolidate Selection, but the benefits of Region Grouping are that you can ungroup to get back to the individual Regions, and that it works across multiple tracks. To create a Region group, select a number of Regions — the screen below shows a typical example, where I have used Strip Silence to separate some drum parts into individual hits. The selection can include free space as well, even at the start or end, but remember, whatever the selection, that will become the boundary of the completed Region group.
Select Group from the Region menu in Pro Tools 7 or use the shortcut (Mac: Command+Alt+G, Windows Ctrl+Alt+G). You will see that the selected Regions have now become one Region, with a Region group icon in the bottom left-hand corner of the group. Region groups also appear separately in the Region List, ready to pull out and be reused elsewhere. You can edit a Region group just as you would a normal Region, but be aware that any Regions affected by the edit will remain affected after ungrouping. To ungroup a Region group, select Ungroup from the Region menu or use the shortcut (Mac Command+Alt+U, Windows Ctrl+Alt+U). Region groups can also be used across multiple tracks as well — in the example opposite, to group together a brass stab. You can also rename Region groups just as you would a normal Region, by double-clicking the Region group with the Grabber tool and changing the name in the dialogue box. What's more, multitrack Region groups can contain any type or combinations of types of Region, including audio, MIDI and Instrument. Regrouping Regions The Regroup menu command enables you undo the last ungroup command, and so regroups the individual Regions back into their previous group. Nothing particularly clever about that, until you realise that this enables you to ungroup a group of Regions, make some changes and then regroup them again and carry on. Even better, if the group is used elsewhere in the Session, when you come to regroup a group of Regions Pro Tools will present you with two choices. The changes you have made can modify all the instances of that Region group in the Session, or make a copy of the Region group and only change that copy.
Let's take that brass stab group again. First, I'll ungroup it using the Ungroup command from the Region menu. Then I can make the changes to the original individual Regions; in this case, I want to make the note on the second 'Flugel' track the correct length. Originally I faded it early because there was a glitch on that take, but I have now decided to copy another note from another take and paste it in. When I select Regroup from the Region menu or use the shortcut (Mac Command+Alt+R, Windows Ctrl+Alt+R), a dialogue box appears offering two options. Modify will implement the changes to all the instances of that Region group in the Session, while the default option of Copy will make a copy of that Region group and only make the changes to that copy, leaving all the other instances unmodified. It is possible to make changes to your Session that result in a Region group getting broken or separated. This can happen, for example, if you delete or even hide a track that has Regions on it that contribute to a Region group. A separated Region group has a different icon in the bottom left-hand corner to warn you it is no longer complete. A 'separated' Region group still functions as a single group, but the icon warns that it is somehow incomplete.
Making Changes To Region Groups Region groups really do enable all the individual Regions within them to be modified in very detailed ways, without having to ungroup them. For instance, if you have a group of Regions on tick-based tracks and then change the Session tempo, Pro Tools moves all the individual Regions within the group to their correct places, all without you having to ungroup the Region group. Let's take as an example a four-bar drum loop with a tempo of 120bpm, as shown in the screen on the next page. When I change the tempo to 140bpm, notice how all the individual elements in the loop move in time to remain at their correct positions in the loop.
As you can see you can edit a Region group just as you would any other Region using commands such as Copy, Paste, Trim, Mute, Lock and so on. However, there are some differences you should be aware of when working with Region groups. Audiosuite processing, consolidation, recording new audio or using the pencil tool to redraw the waveforms all result in a new Region being created over the Region group. The screens below show a selection on a snare track that includes some of a Region group, before and after I consolidate the selection. The new, consolidated Region has been created fine, but the Snare track has been split out of the Region group; the other areas now have separated Region group icons, but they still function as a Region group! If you don't want this to happen, ungroup the Region group, make the changes and then use the Regroup function. Just as with normal Regions, you can have crossfades and fades between Region groups, or between a Region group and other normal Regions. Crossfades and fades are implemented only on audio tracks, so if a Region group includes a MIDI track, that track will not be affected by any crossfades or fades. If the Region group is ungrouped, any fades or crossfades with it will be removed, though they will be restored on regrouping the Region group. It is possible to import and export Region groups to and from Sessions, so enabling complex packages of audio and MIDI data to be transferred from Session to Session. Digidesign have created a special file format for Region groups to enable this, with the '.rgrp' extension. Region group 'rgrp' files include the references to all audio files within the Region group, Region names and relative locations in the tracks, fades and crossfades, Region group names and format, all MIDI data present within the Region group, and track names. The group files do not include audio files, automation, plug-ins, track routing, tempo and meter mapping or Region List information.
To export a Region group, select it from within the Region List, then from the Region List pop-up menu select Export Region Groups. The Export Region Groups dialogue box then opens. In the top section, you can set where the 'rgrp' file will be saved. Pro Tools defaults to using the Region Group folder in the current Session, but you can place it in a location of your choice anywhere on your system. The bottom section is similar to the 'Export Selected as Files' dialogue box in that it enables you to decide what happens if this process will create duplicate file names. Once you are happy with the settings, click OK and the Region group will be exported to the location of your choice. Remember, this will export a Region group without any of its associated audio files, just references to their locations. If you want to export a Region group to another drive so you can take the project elsewhere, make sure you have the 'Automatically Copy Files on Import' preference enabled from Operation tab of your Pro Tools preferences. The best way to import a Region group into your current Session is by dragging and dropping. You can do this by dragging from the Digibase browser, Windows Explorer, or Mac Finder direct to the timeline, track, track list or Region List of your current Session. Exactly what happens next depends on where you drop it.
Dropping a Region group file onto the timeline or Track List will make Pro Tools create new tracks to take the imported Region group. Dropping onto the Region List will put the Region group in the Region List ready for use when you need it, just like importing audio into the Region List. Dropping onto a track will make Pro Tools check to see if the Region group will 'fit' by checking the track formats of the selected track or tracks and the Region group. If they match, the Region group will be imported and placed at the point you selected. If they don't the import won't happen — as when you try to drag a mono Region onto a stereo track, Pro Tools won't let you! All in all, the Region group feature is a really powerful concept that will find many uses in both music and post-production applications. Go and enjoy. Published in SOS October 2006 | Friday 29th August 2008 September 2008
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