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> Unreal Engine API Reference > Runtime > Engine > Components > UAudioComponent > UAudioComponent::FadeIn

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UAudioComponent::FadeIn

This function allows designers to call Play on an Audio Component instance while applying a volume curve over time.

Windows

MacOS

Linux

Override Hierarchy

UAudioComponent::FadeIn()

UAudioCurveSourceComponent::FadeIn()

References

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

Syntax

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

Remarks

This function allows designers to call Play on an Audio Component instance while applying a volume curve over time. Parameters allow designers to indicate the duration of the fade, the curve shape, and the start time if seeking into the sound.

Parameters

Parameter	Description
FadeInDuration	How long it should take to reach the FadeVolumeLevel
FadeVolumeLevel	The percentage of the AudioComponents's calculated volume to fade to
FadeCurve	The curve to use when interpolating between the old and new volume

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