Auto Align 2 for live orchestra recording

Hey! I recently recorded with an orchestra and I’m trying to figure out how to approach applying Auto Align 2 to the recording. I looked at a couple examples in the manual but they don’t quite cover this scale of recording. The full mic setup is as follows for complete clarity (slashes indicate separate mics):

Decca L/C/R
OutRig L/R
AEA Blumlein L/R
Far Room L/R
Surround L-L/L-R/R-L/R-R
InRig L/R
Violin A-1/A-2/A-3
Violin B-1/B-2/B-3
Viola 1/2/3
Cello 1/2/3
Bass 1/2
WW Room L/R
Flute 1/2
Oboe 1/2
Clarinet 1/2
Bassoon 1/2
Horns Room L/R
Horns 1-2/3-4
Brass Room L/R
Trumpet 1/2
Trombone 1/2/3
Tuba
Timpani L/R

My instinct says NOT to group the Decca, OutRig, Blumlein, Far Room, Surround and InRig all together because maintaining the time difference between those mics is what gives the studio space its unique sound. When it comes to all the spot mics, I see some groupings that could improve the clarity of those instruments: Violin A-1/A-2/A-3 as one group and Trombone 1/2/3 as another group for instance.

Is grouping the spot mics this granularly a good approach or should it be more section based like grouping: Brass Room L/R, Trumpet 1/2, Trombone 1/2/3, Tuba? There’s a fair amount of bleed in all the mics (trumpets are everywhere as usual) so something like the Bassoon 1 mic is inevitably picking up some of the Flute 1 part, for example.

All this considered, my current grouping is as follows:
1: Decca L/C/R
2: OutRig L/R
3: Blumlein L/R
4: Far Room L/R
5: Surround L-L/L-R/R-L/R-R
6: InRig L/R
7: Violin A-1/A-2/A-3
8: Violin B-1/B-2/B-3
9: Viola 1/2/3
10: Cello 1/2/3
11: Bass 1/2
12: WW Room L/R
13: Flute 1/2
14: Oboe 1/2
15: Clarinet 1/2
16: Basson 1/2
17: Horns Room L/R/1-2/3-4
18: Brass Room L/R
19: Trumpet 1/2
20: Trombone 1/2/3
21 (Ungrouped): Tuba
22: Timpani L/R

Does this grouping make sense or would anyone suggest a different approach? Is there any way to group the Decca, OutRig, Blumlein, etc and keep their relative distance/timing but fix any phase issues? And do mics like Far Room L/R even need to be grouped or should I be using channel linking to set them as a Stereo Link? For transparency I’m a composer first so I’d super appreciate some more experienced engineering/mixing perspectives. Thanks!

Hi @markbenis,
Great questions and usage there!

Grouping treats each group as a separate section.

In addition to grouping AA2 has two “link” modes:

  • Stereo Link (keeping the L/R relations thus keeping the stereo spreading)
  • Phase Lock (treat all phased locked tracks as a “whole” improving their relationship to the group but not adjusting their relations).

Spatial considerations:

  • The initial alignment process tries to optimize phase which might reduce depth. Exactly for that you have nudge buttons (+ and - when hovering)

There’s no one fits all.

That’s why you have 4 banks to store different alignments so you can compare which sounds better to you.
image

In the end of the day AA2 is a musical tool. so your ears will judge which alignment is best for your needs.

Let us know if you got more questions.
Also, if needed, feel free to contact our support for deeper overview of your project(s).

Tal.

Hi Tal, appreciate your response and all the info!

Quick question about Stereo Link – should mic pairs like the Blumleins, OutRigs, Far Rooms, InRigs, etc be Stereo Linked then?

I hope it’s not too much to ask but a grouping analysis of this setup (or really a general orchestral recording setup similar to this) in the style of the manual’s example 1 (band) and example 2 (jazz trio) would be a huge help and I’m sure it would encourage other users to use AA2 for orchestral recordings. I’m still a bit uncertain how to approach this all so I’ll follow up with support as well, thank you for offering.

In the meantime using the banks is a great idea to test different alignments! Thank you for the suggestion and I really appreciate you taking the time to read this over. Who would think recording orchestras could be so complicated!

Stereo links are usually a good thing to do. It keeps the depth and analysis in context.

About adding a complex orchestra example to the manual, I’ll raise that with the team to consider what’s the best way to tackle it. Thank you for the suggestion.

But as always, just as no take or room sounds exactly the same, our support is always happy to help on a per case basis.

May the alignment be with you.
Tal.