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  3. UAudioComponent

UAudioComponent

AudioComponent is used to play a Sound

Unreal Engine C++ API Reference > Runtime > Engine > Components

Inheritance Hierarchy

References

   
Module Engine
Header /Engine/Source/Runtime/Engine/Classes/Components/AudioComponent.h
Include #include "Components/AudioComponent.h"

Syntax

UCLASS (ClassGroup=(Audio, Common),  
       HideCategories=(Object, ActorComponent, Physics, Rendering, Mobility, LOD),  
       ShowCategories=Trigger, Meta=(BlueprintSpawnableComponent), MinimalAPI)  
class UAudioComponent :  
    public USceneComponent ,  
    public ISoundParameterControllerInterface ,  
    public FQuartzTickableObject

Remarks

AudioComponent is used to play a Sound

Variables

  Type Name Description
Public variable int32 ActiveCount A count of how many times we've started playing
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite blueprintsetter FSoundAttenuationSettings AttenuationOverrides If bOverrideSettings is true, the attenuation properties to use for sounds generated by this component
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite blueprintsetter TObjectPtr< USoundAttenuation > AttenuationSettings If bOverrideSettings is false, the asset to use to determine attenuation properties for sounds generated by this component
Public variable UProperty FName AudioComponentUserID Configurable, serialized ID for audio plugins
Public variable uint32 AudioDeviceID The specific audio device to play this component on
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite EAttachmentRule AutoAttachLocationRule Options for how we handle our location when we attach to the AutoAttachParent, if bAutoManageAttachment is true.
Public variable UProperty Category, Meta BlueprintReadWrite visibleinstanceonly TWeakObjectPtr< USceneComponent > AutoAttachParent Component we automatically attach to when activated, if bAutoManageAttachment is true.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite EAttachmentRule AutoAttachRotationRule Options for how we handle our rotation when we attach to the AutoAttachParent, if bAutoManageAttachment is true.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite EAttachmentRule AutoAttachScaleRule Options for how we handle our scale when we attach to the AutoAttachParent, if bAutoManageAttachment is true.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite FName AutoAttachSocketName Socket we automatically attach to on the AutoAttachParent, if bAutoManageAttachment is true.
Public variable UProperty Category, EditAnywhere BlueprintReadWrite uint8: 1 bAllowSpatialization Overrides spatialization enablement in either the attenuation asset or on this audio component's attenuation settings override.
Public variable uint8: 1 bAlwaysPlay Whether to artificially prioritize the component to play
Public variable UProperty uint8: 1 bAutoDestroy Auto destroy this component on completion
Public variable UProperty Category, EditAnywhere BlueprintReadOnly uint8: 1 bAutoManageAttachment True if we should automatically attach to AutoAttachParent when Played, and detach from our parent when playback is completed.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite uint8: 1 bCanPlayMultipleInstances If true, the Audio Component will play multiple sound instances at once.
Public variable uint8: 1 bCenterChannelOnly Whether or not this sound class forces sounds to the center channel
Public variable UProperty Category, EditAnywhere BlueprintReadWrite uint8: 1 bDisableParameterUpdatesWhilePlaying If true, the Audio Component will ignore parameter updates for already-playing sound(s).
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite uint8: 1 bEnableHighPassFilter Whether or not to apply a low-pass filter to the sound that plays in this audio component.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite uint8: 1 bEnableLowPassFilter Whether or not to apply a low-pass filter to the sound that plays in this audio component.
Public variable uint8: 1 bIgnoreForFlushing If true, this sound will not be stopped when flushing the audio device.
Public variable uint8: 1 bIsFadingOut Whether or not fade out was triggered.
Public variable uint8: 1 bIsMusic Whether or not this audio component is a music clip
Public variable uint8: 1 bIsPaused Whether or not this audio component has been paused
Public variable uint8: 1 bIsPreviewSound Whether or not this sound is a preview sound
Public variable UProperty Category, EditAnywhere, AdvancedDisplay BlueprintReadWrite uint8: 1 bIsUISound Whether or not this sound plays when the game is paused in the UI
Public variable uint8: 1 bIsVirtualized Whether or not this audio component's sound is virtualized
Public variable UProperty Category, EditAnywhere BlueprintReadWrite blueprintsetter uint8: 1 bOverrideAttenuation Allows defining attenuation settings directly on this audio component without using an attenuation settings asset.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite uint8: 1 bOverridePriority Whether or not to override the priority of the given sound with the value provided.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite uint8: 1 bOverrideSubtitlePriority Whether or not to override the sound's subtitle priority.
Public variable uint8: 1 bPreviewComponent Whether this audio component is previewing a sound
Public variable uint8: 1 bReverb Whether or not the audio component should be excluded from reverb EQ processing
Public variable UProperty uint8: 1 bShouldRemainActiveIfDropped Whether the wave instances should remain active if they're dropped by the prioritization code.
Public variable UProperty uint8: 1 bStopWhenOwnerDestroyed Stop sound when owner is destroyed
Public variable UProperty Category, EditAnywhere BlueprintReadWrite uint8: 1 bSuppressSubtitles If true, subtitles in the sound data will be ignored.
Public variable UProperty Category, EditAnywhere BlueprintReadWrite TSet< TObjectPtr< USoundConcurrency > > ConcurrencySet What sound concurrency rules to use for sounds generated by this audio component
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite TArray< FAudioParameter > DefaultParameters Array of parameters for this AudioComponent.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 EnvelopeFollowerAttackTime The attack time in milliseconds for the envelope follower.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 EnvelopeFollowerReleaseTime The release time in milliseconds for the envelope follower.
Public variable float FadeInTimeDuration How much time the audio component was told to fade in.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float HighPassFilterFrequency If enabled, the frequency of the Highpass Filter (in Hz) to apply to this voice.
Public variable UProperty Transient TArray< FAudioParameter > InstanceParameters Array of transient parameters for this AudioComponent instance.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float LowPassFilterFrequency If enabled, the frequency of the Lowpass Filter (in Hz) to apply to this voice.
Public variable UProperty Category, EditAnywhere BlueprintReadWrite FSoundModulationDefaultRoutingSettings ModulationRouting  
Public variable float OcclusionCheckInterval While playing, this component will check for occlusion from its closest listener every this many seconds
Public variable UProperty BlueprintAssignable FOnAudioFinished OnAudioFinished Called when we finish playing audio, either because it played to completion or because a Stop() call turned it off early
Public variable FOnAudioFinishedNative OnAudioFinishedNative Shadow delegate for non UObject subscribers
Public variable UProperty BlueprintAssignable FOnAudioMultiEnvelopeValue OnAudioMultiEnvelopeValue  
Public variable FOnAudioMultiEnvelopeValueNative OnAudioMultiEnvelopeValueNative Shadow delegate for non UObject subscribers
Public variable UProperty BlueprintAssignable FOnAudioPlaybackPercent OnAudioPlaybackPercent Called as a sound plays on the audio component to allow BP to perform actions based on playback percentage.
Public variable FOnAudioPlaybackPercentNative OnAudioPlaybackPercentNative Shadow delegate for non UObject subscribers
Public variable UProperty BlueprintAssignable FOnAudioPlayStateChanged OnAudioPlayStateChanged This function returns the Targeted Audio Component's current Play State.
Public variable FOnAudioPlayStateChangedNative OnAudioPlayStateChangedNative Shadow delegate for non UObject subscribers
Public variable UProperty BlueprintAssignable FOnAudioSingleEnvelopeValue OnAudioSingleEnvelopeValue  
Public variable FOnAudioSingleEnvelopeValueNative OnAudioSingleEnvelopeValueNative Shadow delegate for non UObject subscribers
Public variable UProperty BlueprintAssignable FOnAudioVirtualizationChanged OnAudioVirtualizationChanged Called when virtualization state changes
Public variable FOnAudioVirtualizationChangedNative OnAudioVirtualizationChangedNative Shadow delegate for non UObject subscribers
Public variable UProperty FOnQueueSubtitles OnQueueSubtitles Called when subtitles are sent to the SubtitleManager.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float PitchModulationMax The upper bound to use when randomly determining a pitch multiplier
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float PitchModulationMin The lower bound to use when randomly determining a pitch multiplier
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float PitchMultiplier A pitch multiplier to apply to sounds generated by this component
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float Priority If enabled, overrides the priority of the selected sound with the value provided.
Protected variable FRandomStream RandomStream  
Public variable UProperty Category, EditAnywhere BlueprintReadWrite TObjectPtr< USoundBase > Sound The sound to be played
Public variable UProperty Category, EditAnywhere, AdvancedDisplay TObjectPtr< USoundClass > SoundClassOverride SoundClass that overrides that set on the referenced SoundBase when component is played.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite TObjectPtr< USoundEffectSourcePresetChain > SourceEffectChain The chain of Source Effects to apply to the sounds playing on the Audio Component
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float SubtitlePriority Used by the subtitle manager to prioritize subtitles wave instances spawned by this component.
Public variable float TimeAudioComponentPlayed What time the audio component was told to play. Used to compute audio component state.
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float VolumeModulationMax The upper bound to use when randomly determining a volume multiplier
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float VolumeModulationMin The lower bound to use when randomly determining a volume multiplier
Public variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float VolumeMultiplier A volume multiplier to apply to sounds generated by this component

Constructors

  Type Name Description
Public function  

UAudioComponent ( const FObjectInitializer& ObjectInitializer
)

  

Functions

  Type Name Description
Public function UFunction BlueprintCallable, Category displayname void

AddModulationRouting ( const TSet< USoundModulatorBase* >& Modulators,
const EModulationDestination Destination
)

 Adds the given set of Modulators to the modulators currently set on the Audio Component.
Public function UFunction BlueprintCallable, Category void

AdjustAttenuation ( const FSoundAttenuationSettings& InAttenuationSettings
)

 This function is used to modify the Attenuation Settings on the targeted Audio Component instance.
Public function UFunction BlueprintCallable, Category void

AdjustVolume ( float AdjustVolumeDuration,
float AdjustVolumeLevel,
const EAudioFaderCurve FadeCurve
)

 This function allows designers to trigger an adjustment to the sound instance’s playback Volume with options for smoothly applying a curve over time.
Public function void

AdjustVolumeInternal ( float AdjustVolumeDuration,
float AdjustVolumeLevel,
bool bIsFadeOut,
EAudioFaderCurve FadeCurve
)

  
Public function UFunction BlueprintCallable, Category, Meta bool Retrieves Attenuation Settings data on the targeted Audio Component.
Public function Const void Collects the various attenuation shapes that may be applied to the sound played by the audio component for visualization in the editor or via the in game debug visualization.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

FadeIn ( float FadeInDuration,
float FadeVolumeLevel,
float StartTime,
const EAudioFaderCurve FadeCurve
)

 This function allows designers to call Play on an Audio Component instance while applying a volume curve over time.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

FadeOut ( float FadeOutDuration,
float FadeVolumeLevel,
const EAudioFaderCurve FadeCurve
)

 This function allows designers to call a delayed Stop on an Audio Component instance while applying a volume curve over time.
Public function Const const TObjectPtr< USoundAttenuation >  
Public function Const const FSoundAttenuationSettings * Returns a pointer to the attenuation settings to be used (if any) for this audio component dependent on the SoundAttenuation asset or overrides set.
Public function Static UAudioComponent *

GetAudioComponentFromID ( uint64 AudioComponentID
)

  
Public function Const uint64  
Public function Const FName  
Public function UFunction BlueprintCallable, Category displayname bool

GetCookedEnvelopeData ( float& OutEnvelopeData
)

 Retrieves Cooked Amplitude Envelope Data at the current playback time.
Public function UFunction BlueprintCallable, Category displayname bool Retrieves the current-time amplitude envelope data of the sounds playing on the audio component.
Public function UFunction BlueprintCallable, Category bool

GetCookedFFTData ( const TArray< float >& FrequenciesToGet,
TArray< FSoundWaveSpectralData >& OutSoundWaveSpectralData
)

 Retrieves the current-time cooked spectral data of the sounds playing on the audio component.
Public function UFunction BlueprintCallable, Category bool Retrieves the current-time cooked spectral data of the sounds playing on the audio component.
Public function Const uint32  
Public function Const UFunction BlueprintCallable, Category EAudioComponentPlayState Returns the enumerated play states of the audio component.
Public function Const const FSharedISourceBufferListenerPtr & Gets Source Buffer Listener
Public function Const UFunction BlueprintCallable, Category bool Queries whether or not the targeted Audio Component instance’s sound has Amplitude Envelope Data, returns FALSE if none found.
Public function Const UFunction BlueprintCallable, Category bool Queries if the sound wave playing in this audio component has cooked FFT data, returns FALSE if none found.
Public function Const UFunction BlueprintCallable, Category bool Returns if the sound is virtualized.
Public function Virtual UFunction BlueprintCallable, Category void

Play ( float StartTime
)

 Begins playing the targeted Audio Component's sound at the designated Start Time, seeking into a sound.
Public function Static void

PlaybackCompleted ( uint64 AudioComponentID,
bool bFailedToStart
)

  
Protected function void

PlayInternal ( const PlayInternalRequestData& InPlayRequestData,
USoundBase* InSoundOverride
)

 Utility function called by Play and FadeIn to start a sound playing.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

PlayQuantized ( const UObject* WorldContextObject,
UPARAM(ref) UQuartzClockHandle*& InClockHandle,
UPARAM(ref) FQuartzQuantizationBoundary& InQuantizationBoundary,
const FOnQuartzCommandEventBP& InDelegate,
float InStartTime,
float InFadeInDuration,
float InFadeVolumeLevel,
EAudioFaderCurve InFadeCurve
)

 Start a sound playing on an audio component on a given quantization boundary with the handle to an existing clock
Public function Virtual void

PlayQueuedQuantizedInternal ( const UObject* WorldContextObject,
FAudioComponentCommandInfo InCommandInfo
)

 For if this is being played through a sound queued through Quartz.
Public function UFunction BlueprintCallable, Category displayname void

RemoveModulationRouting ( const TSet< USoundModulatorBase* >& Modulators,
const EModulationDestination Destination
)

 Removes the given set of Modulators to the modulators currently set on the Audio Component.
Public function UFunction blueprintsetter void

SetAttenuationOverrides ( const FSoundAttenuationSettings& InAttenuationOverrides
)

  
Public function UFunction blueprintsetter void

SetAttenuationSettings ( USoundAttenuation* InAttenuationSettings
)

  
Public function UFunction BlueprintCallable, Category void

SetAudioBusSendPostEffect ( UAudioBus* AudioBus,
float AudioBusSendLevel
)

 Sets how much audio the sound should send to the given Audio Bus (POST Source Effects).
Public function UFunction BlueprintCallable, Category void

SetAudioBusSendPreEffect ( UAudioBus* AudioBus,
float AudioBusSendLevel
)

 Sets how much audio the sound should send to the given Audio Bus (PRE Source Effects).
Public function void Set when the sound is finished with initial fading in
Public function UFunction BlueprintCallable, Category void

SetHighPassFilterEnabled ( bool InHighPassFilterEnabled
)

 When set to TRUE, enables an additional High Pass Filter Frequency to be calculated in with the sound instance’s HPF total, allowing designers to set filter settings for the targeted Audio Component’s sound instance.
Public function UFunction BlueprintCallable, Category void

SetHighPassFilterFrequency ( float InHighPassFilterFrequency
)

 Sets a cutoff frequency, in Hz, for the targeted Audio Component’s sound’s High Pass Filter calculation.
Public function void

SetIsVirtualized ( bool bInIsVirtualized
)

 Sets whether or not sound instance is virtualized
Public function UFunction BlueprintCallable, Category void

SetLowPassFilterEnabled ( bool InLowPassFilterEnabled
)

 When set to TRUE, enables an additional Low Pass Filter Frequency to be calculated in with the sound instance’s LPF total, allowing designers to set filter settings for the targeted Audio Component’s sound instance.
Public function UFunction BlueprintCallable, Category void

SetLowPassFilterFrequency ( float InLowPassFilterFrequency
)

 Sets a cutoff frequency, in Hz, for the targeted Audio Component’s sound’s Low Pass Filter calculation.
Public function UFunction BlueprintCallable, Category displayname void

SetModulationRouting ( const TSet< USoundModulatorBase* >& Modulators,
const EModulationDestination Destination,
const EModulationRouting RoutingMethod
)

 Sets the routing for one of the given Audio component's Modulation Destinations.
Public function UFunction BlueprintCallable, Category void

SetOutputToBusOnly ( bool bInOutputToBusOnly
)

 Sets whether or not to output the audio to bus only.
Public function UFunction blueprintsetter void

SetOverrideAttenuation ( bool bInOverrideAttenuation
)

  
Public function UFunction BlueprintCallable, Category void

SetPaused ( bool bPause
)

 Pause an audio component playing its sound cue, issue any delegates if needed
Public function UFunction BlueprintCallable, Category void

SetPitchMultiplier ( float NewPitchMultiplier
)

 Set a new pitch multiplier
Public function void

SetPlaybackTimes ( const TMap< uint32, float >& InSoundWavePlaybackTimes
)

 Sets the audio thread playback time as used by the active sound playing this audio component Will be set if the audio component is using baked FFT or envelope following data so as to be able to feed that data to BP based on playback time
Public function UFunction BlueprintCallable, Category void

SetSound ( USoundBase* NewSound
)

 Set what sound is played by this component.
Public function void

SetSourceBufferListener ( const FSharedISourceBufferListenerPtr& InSourceBufferListener,
bool bShouldZeroBufferAfter
)

 Sets Source Buffer Listener
Public function UFunction BlueprintCallable, Category void

SetSourceBusSendPostEffect ( USoundSourceBus* SoundSourceBus,
float SourceBusSendLevel
)

 Allows designers to target a specific Audio Component instance’s sound and set the send level (volume of sound copied) to the indicated Source Bus.
Public function UFunction BlueprintCallable, Category void

SetSourceBusSendPreEffect ( USoundSourceBus* SoundSourceBus,
float SourceBusSendLevel
)

 Allows designers to target a specific Audio Component instance’s sound and set the send level (volume of sound copied) to the indicated Source Bus.
Public function void  
Public function UFunction BlueprintCallable, Category void

SetSubmixSend ( USoundSubmixBase* Submix,
float SendLevel
)

 Allows designers to target a specific Audio Component instance’s sound set the send level (volume of sound copied) to the indicated Submix.
Public function UFunction BlueprintCallable, Category void

SetUISound ( bool bInUISound
)

 Set whether sounds generated by this audio component should be considered UI sounds
Public function UFunction BlueprintCallable, Category void

SetVolumeMultiplier ( float NewVolumeMultiplier
)

 Set a new volume multiplier
Public function UFunction BlueprintCallable, Category void

SetWaveParameter ( FName InName,
USoundWave* InWave
)

 Sets the parameter matching the name indicated to the provided Wave.
Public function Virtual UFunction BlueprintCallable, Category void

Stop ()

 Stop an audio component's sound, issue any delegates if needed
Public function UFunction BlueprintCallable, Category void

StopDelayed ( float DelayTime
)

 Cues request to stop sound after the provided delay (in seconds), stopping immediately if delay is zero or negative
Public function Const UFunction BlueprintPure, Category displayname   Gets the set of currently active modulators for a given Modulation Destination.
Protected function void Utility function that updates which texture is displayed on the sprite dependent on the properties of the Audio Component.

Overridden from USceneComponent

  Type Name Description
Public function Virtual Const FBoxSphereBounds

CalcBounds ( const FTransform& LocalToWorld
)

 Calculate the bounds of the component. Default behavior is a bounding box/sphere of zero size.
Public function Virtual void

OnUpdateTransform ( EUpdateTransformFlags UpdateTransformFlags,
ETeleportType Teleport
)

 Native callback when this component is moved

Overridden from UActorComponent

  Type Name Description
Public function Virtual void

Activate ( bool bReset
)

 Activates the SceneComponent, should be overridden by native child classes.
Public function Virtual Const const UObject * Give a readable name for this component, including asset name if applicable
Public function Virtual void Deactivates the SceneComponent.
Public function Virtual void

EndPlay ( const EEndPlayReason::Type EndPlayReason
)

 Ends gameplay for this component.
Public function Virtual Const bool Overridable check for a component to indicate to its Owner that it should prevent the Actor from auto destroying when finished
Public function Virtual void Called when a component is registered, after Scene is set, but before CreateRenderState_Concurrent or OnCreatePhysicsState are called.
Public function Virtual void Called when a component is unregistered.

Overridden from UObject

  Type Name Description
Public function Virtual void Called before destroying the object.
Public function Virtual Const FString This function actually does the work for the GetDetailedInfo() and is virtual.
Public function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally
Public function Virtual void Do any object-specific cleanup required immediately after loading an object.
Public function Virtual void Handles reading, writing, and reference collecting using FArchive.

Overridden from UObjectBase

  Type Name Description
Public function Virtual Const FName Overridable method to return a logical name for identification in stats.

Overridden from ISoundParameterControllerInterface

  Type Name Description
Public function Virtual Const FAudioDevice * SoundParameterControllerInterface Implementation
Public function Virtual Const bool  
Public function Virtual Const uint64 Returns the id of the sound owner's instance associated with the parameter interface.
Public function Virtual TArray< FAudioParameter > & Returns the Game Thread copy of parameters to modify in place.
Public function Virtual USoundBase * Returns the USoundBase used to initialize instance parameters to update.
Public function Virtual Const UFunction BlueprintCallable, Category bool Returns TRUE if the targeted Audio Component’s sound is playing.

Overridden from IAudioParameterControllerInterface

  Type Name Description
Public function Virtual void Resets all parameters to their original values.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

SetBoolParameter ( FName InName,
bool InBool
)

 Sets a named Boolean.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

SetFloatParameter ( FName InName,
float InFloat
)

 Sets a named Float.
Public function Virtual UFunction BlueprintCallable, Category, Meta void

SetIntParameter ( FName InName,
int32 InInt
)

 Sets a named Int32.

Overridden from FQuartzTickableObject

  Type Name Description
Protected function Virtual void Used for processing queue commands.
Protected function Virtual void  
Protected function Virtual void

ProcessCommand ( const Audio::FQuartzQueueCommandData& InQueueCommandData
)

  

Classes

  Type Name Description
Public struct PlayInternalRequestData    

Constants

Name Description
AudioComponentIDCounter  
AudioIDToComponentMap  
AudioIDToComponentMapLock  

Deprecated Variables

  Type Name Description
Public variable UProperty TObjectPtr< USoundConcurrency > ConcurrencySettings_DEPRECATED What sound concurrency to use for sounds generated by this audio component
Public variable UProperty float HighFrequencyGainMultiplier_DEPRECATED  
Public variable UProperty float VolumeWeightedPriorityScale_DEPRECATED  

See Also

https://docs.unrealengine.com/WorkingWithAudio/Overview

USoundBase

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