Unreal FMOD Resonance - Sound Reflection bug with rotated ResonanceRooms

Unreal Engine
1

Dear FMOD Team,

we are currently facing an audio bug with rotated ResonanceRooms when only Reflection Parameter values are set (ReverbGain = 0).

In cases the Rooms are not rotated, everything works fine and the Sound Reflection effect can be heard.

But as soon we rotate the volume/room (e.g. to define a stairway corridor with a slope) the reflection can only be heared in the “center part” of the room. (see scribble)

fmod_resonance_rotatedroomreflection

This bug is only experienced with the reflection value. The ReverbGain works fine in all locations of the room boundaries. Which led us to the conclusion: This might be a bug inside fmod or the resonanceaudio plugin??

Used Versions:
Unreal 4.26.2
FMOD Studio 2.02.03 (with included resonanceaudio.dll)

2

I have found that this issue reproduces with Resonance Audio regardless of whether the FMOD integration is present in the project, so this appears to be an issue with Resonance Audio. I recommend reporting this issue to the Resonance Audio developers via the Resonance Audio GitHub repository .