Does multi-position work with Spatial Audio Volume ?

Question

Hello,

We are working with Spatial Audio Volume and multi-position in Unreal, but it doesn't seem to work properly.
In the example below, the red cross is the location of the multi-position Blueprint and his Ak Component. The three yellow squares are emitters from this multi-position BP. The blue square is the listener. 
You can see that only the emitter in the top left, which is in the same volume as the AkComponent of the multi-position BP, works correctly with diffraction and can be heard through a portal. The other two emitters are completely muted, even if I'm standing next to them. On the other hand, it works well if everything is located in the same Spatial Audio Volume. 

We found nothing in the Audiokinetic documentation about the behavior of multi-position within Spatial Audio Volume. We are working with Wwise 2022.1.18 and UE 5. We don’t know if this is a bug that may have been fixed in a later Wwise version, or if we did something wrong in the Blueprint setup or in the use of the AkComponent.

Thanks for your help

Answer 1

My guess would be that on init, only one sound emitter's position gets taken into consideration for Spatial Audio per AkComponent: if the first registered sound emitter is unoccluded, all three are unoccluded and vice-versa. Did you try splitting your sound emitters into dedicated actors?