# Unreal FMOD Resonance - Sound Reflection bug with rotated ResonanceRooms

**URL:** <https://qa.fmod.com/t/unreal-fmod-resonance-sound-reflection-bug-with-rotated-resonancerooms/18429>\
**Category:** Unreal Engine\
**Created:** [February 23, 2022, 1:44pm UTC](https://qa.fmod.com/t/unreal-fmod-resonance-sound-reflection-bug-with-rotated-resonancerooms/18429 "2022-02-23T13:44:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rnemetz](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/rnemetz/32/3231_2.png) [@rnemetz](https://qa.fmod.com/u/rnemetz)\
**Post date:** [February 23, 2022, 1:44pm UTC](https://qa.fmod.com/t/unreal-fmod-resonance-sound-reflection-bug-with-rotated-resonancerooms/18429/1 "2022-02-23T13:44:14Z")

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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](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/a/a9db72e8e91cad5e25d24e4cdfc2e871c590aded.png)

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)

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**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [March 3, 2022, 11:48pm UTC](https://qa.fmod.com/t/unreal-fmod-resonance-sound-reflection-bug-with-rotated-resonancerooms/18429/2 "2022-03-03T23:48:15Z")

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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](https://github.com/resonance-audio).