@Cyril-Blanc said:
If I do not touch the Pan in Logic the signal of the Flute 1 that I have place on the left side
Please post a screenshot that shows the Main Microphone, too, or add a screenshot from the Output Format Editor (F4). It's hard to offer any meaningful answer without knowing the most important part of the puzzle.
@Cyril-Blanc said:
This show that all the signal coming out of MIR is coming form the 9 speakers, even the top ones.
Nothing wrong with that - after all, that's what "immersive audio" is all about: Enveloping the listener in an aurally accurate way. This is especially true for the wet signal component (which is all you hear in your example, as the instance is set to "100% wet", obviously), but also for the dry signal, because MIR takes care for its aurally proper position in the room by means of its underlying Ambisonics panning.
@Cyril-Blanc said:
If I set the pan in Logic like this :
The signal comes from the left.
Yes, this is what simple power-panning will look like. You are comparing apples with pears.
@Cyril-Blanc said:
So there is a problem in MIR, it does not send the signal to the good output
Do you know a solution ? Have I a bad setup in MIR ?
There is no problem with MIR 3D, it just seems like you don't know what to expect from an actual 3D recording in a real room (... which is what MIR 3D virtually recreates). However, I can't say if you have a bad setup in MIR 3D, too. Like pointed out above, I would have to see the Output Format first.
@Cyril-Blanc said:
After going to 3D How do you reverse in 2D ?
You're again mixing up topics here, don't you?
But anyway - typically you have three options:
- Re-record the stereo downmix of the Atmos renderer.
- Create a so-called downmix from your 3D mix, either automatically by means of the built-in options of the DAW or a 3rd-party plug-in, or manually by means of a signal matrix or a channel mixer.
- ... or the most elegant one: Switch to an appropriate stereo Output Format in MIR 3D. Of course, this will only work if you don't use sources in your mix that don't use MIR 3D for spatialisation.
@Cyril-Blanc said:
How do you send the instrument to the top speakers ?
In MIR 3D there will more or less always be something going on in all speakers, especially in case of the wet signal. If you want to position sources noticeably higher than the conventional stage area, you have two options:
- Either you use actual Hot-Spot positions that were situated above the stage, e.g. the so-called "Angels Choir" in Vienna Konzerthaus - Great Hall, or one of the balconies in the churches we captured.
- ... or you virtually push the source towards the top layer by increasing the value for its Z-coordinate. While this will not trigger actual IRs captured in that height, it will at least change the dry signal's position accordingly and adapt the Ambisonics decoding geometry of the wet signal accordingly to grant for a believable result.



@Cyril-Blanc said:
P.S. It is very interesting to see that more of 570 users have read the topic on converting a Logic stereo project to and Atmos project
I guess that about 450 of these visits were either you, me or other members of VSL's support team. ;-D