All decoder presets use the loudspeaker positions of the Neue Aula and ICEM's studios. For software that can calculate angles for these from distances, see ambi-speakers.lsp in the Lisp repository.
For concerts in the Neue Aula (from 14/11/2024) the default deocder should be iem-decoder-neue-aula-5-front-plus-rear-centre-with-fills.json
Note that as of 2.7.24 the channel order for Folkwang's Beschallung team is essentially that which I proposed in order to be approximately Atmos-ready (thanks Charles). The channels on the left, below, are the correct Dante channels to route for the Beschallung team; those in parentheses on the right are the SAD-P Dante input channels, for info only, i.e. not to be used by ICEM.
01: Vida Vorne L (31)
02: Vida Vorne R (32)
03: Centre (33)
04: Sub (34)
05: Vida Hinten L (35)
06: Vida Hinten R (36)
07: Seite Links Vorn (37)
08: Seite Rechts Vorn (38)
09: Seite Links Hinten (39)
10: Seite Rechts Hinten (40)
11: Seite Links Mitte (41)
12: Seite Rechts Mitte (42)
13: Decke Links Vorn (43)
14: Decke Rechts Vorn (44)
15: Decke Links Hinten (45)
16: Decke Rechts Hinten (46)
17: Decke Links Mitte (47)
18: Decke Rechts Mitte (48)
19: Centre Links (49)
20: Centre Rechts (50)
21: Hinten Mitte (51)
22: Frontfill LL (52)
23: Frontfill L (53)
24: Frontfill C (54)
25: Frontfill R (55)
26: Frontfill RR (56)
27: Empore LL (57)
28: Empore L (58)
29: Empore R (59)
30: Empore RR (60)
If you want to test the Neue Aula speaker channels, you can use the following reaper file from this repository: ambi5th-speaker-routing-spoken.RPP The required sound files are at https://icem.folkwang-uni.de/~mde/neue-aula-spoken.zip
The Neue Aula Atmos-like presets (e.g. iem-decoder-neue-aula-7.4.json) are offered merely for rendering a lower channel-count file from an Ambisonics project so that, for example, you can play out of software such as QLab (which is currently limited to 24 audio channels maximum). These decoders use the Neue Aula loudspeaker positions so should not be used for an actual Atmos file render, as Atmos uses different loudspeaker positions.
Note also two more things:
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the channel numbers out of the Atmos-like decoders are simply consecutive, i.e. they skip the LFE channel 4 so that you don't render unnecessary silent channels. Take care of mapping to the actual speakers being used, e.g. with four tops in e.g. 7.4, the middle top pair of the Neue Aula is not used; for the sides in 7.4, the front side pair is not used; for the sides in 9.4, the middle side pair is not used. All of this could be reconfigured of course, by making a new decoder and deleting speakers from e.g. iem-decoder-neue-aula-3-front-plus-rear-centre-no-fills.json.
-
as the LFE channel is skipped in the Atmos-like decoders, you'll need to use e.g. SAD-P/Reaper/a mixing desk in order to make a send for the LFE on channel
Michael Edwards, July 13th 2024 Updated November 14th 2024 to reflect the two new speakers at the front (Centre Left and Centre Right)
The sub-directory generic/ in the decoder-panner-presets collection contains
decoder presets modeled after the speaker setup guides provided by Dolby
(https://www.dolby.com/about/support/guide/speaker-setup-guides/). As the
aforementioned presets, they are aimed at working with Ambisonics-mixes in a
context which requires audio rendered to discrete channels (e.g. when creating
an Atmos-bed from an HOA file).
Ruben Philipp, October 10th 2024