Summary
Lots of hidden sound attenuation settings have recently become invalid. This is problematic for anybody who would create their sound attenuation assets in standard Unreal Engine (I used UE 5.5) in order to not have to deal with the ridiculous limits inflicted on creators when making the asset in UEFN.
I have compiled a list of these by simply overriding every setting on the asset in UE 5.5 for the sake of the demo, here is what UEFN gives warnings for (and if previous patch notes are correct, will eventually become fully invalid):
bAttenuateWithLPF
bEnableListenerFocus
bEnableFocusInterpolation
bEnableOcclusion
bUseComplexCollisionForOcclusion
bEnablePriorityAttenuation
bApplyNormalizationToStereoSounds
bEnableLogFrequencyScaling
bEnableSourceDataOverride
SpatializationAlgorithm
BinauralRadius
CustomLowpassAirAbsorptionCurve
CustomHighpassAirAbsorptionCurve
AbsorptionMethod
OcclusionTraceChannel
ReverbSendMethod
PriorityAttenuationMethod
NonSpatializedRadiusEnd
NonSpatializedRadiusMode
LPFRadiusMin
LPFRadiusMax
LPFFrequencyAtMin
LPFFrequencyAtMax
HPFFrequencyAtMin
HPFFrequencyAtMax
FocusAzimuth
NonFocusAzimuth
FocusDistanceScale
NonFocusDistanceScale
NonFocusPriorityScale
FocusVolumeAttenuation
NonFocusVolumeAttenuation
FocusReleaseInterpSpeed
OcclusionLowPassFilterFrequency
OcclusionVolumeAttenuation
OcclusionInterpolationTime
ReverbWetLevelMin
ReverbWetLevelMax
ReverbDistanceMin
ReverbDistanceMax
PriorityAttenuationMin
PriorityAttenuationDistanceMin
PriorityAttenuationDistanceMax
CustomReverbSendCurve
CustomPriorityAttenuationCurve
PluginSettings
There are likely more settings that are giving warnings that i could not include here simply because they are hidden by one dropdown override or another, so those should probably be checked for as well.
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
Assets
Steps to Reproduce
Create a new Sound Attenuation asset (Content Browser → Right Click → Audio → Sound Attenuation) in standard Unreal Engine (as stated earlier, I used Unreal Engine 5.5) Override any of the settings listed there, then Right Click → Migrate → UEFN Project Content Folder → Restart UEFN if it was already open → open your UEFN project → Launch Session → Observe Warnings.
Expected Result
No Sound Attenuation Properties are disallowed and we have reasonable access to Sound Attenuation within UEFN.
Observed Result
Many Sound Attenuation Properties are disallowed and we in turn become very limited in sound attenuation customizability.
Platform(s)
PC (UEFN - Editor)
Additional Notes
Bug Report was made as the patch notes for the recent updates said to do so if we run into any settings we use giving warnings.
Most of these if not all of these settings should be fully allowed in UEFN without the need to migrate, its quite heartbreaking to see audio tools become even more and more restricted as Fortnite updates are released.
A number of other useful UE5 audio tools are also disallowed for use in the UEFN toolset, such as Sound Concurrency, MetaSounds, many Sound Cue Nodes, and much more, it would be quite nice if we weren’t limited to a single outdated Creative Device for our audio needs.