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# SCNAudioPlayer

A controller for playback of a positional audio source in a SceneKit scene.

```
class SCNAudioPlayer
```

## Overview

An [`SCNAudioPlayer`](/documentation/SceneKit/SCNAudioPlayer) object controls playback of a positional audio source in a SceneKit scene. To use positional audio, first create a reusable [`SCNAudioSource`](/documentation/SceneKit/SCNAudioSource) or <doc://com.apple.documentation/documentation/AVFAudio/AVAudioNode> object to provide an audio stream. Then, create an audio player to control the playback of that audio source. Finally, attach the audio player to an [`SCNNode`](/documentation/SceneKit/SCNNode) object for spatialized 3D audio playback based on the position of that node relative to the scene’s [`audioListener`](/documentation/SceneKit/SCNSceneRenderer/audioListener) node.

## Topics

### Creating an Audio Player

[`-  initWithSource:`](/documentation/SceneKit/SCNAudioPlayer/init(source:))

Initializes an audio player for playing the specified simple audio source.

[`-  initWithAVAudioNode:`](/documentation/SceneKit/SCNAudioPlayer/init(avAudioNode:)-4u514)

Initializes an audio player for playing the specified AVFoundation audio node.

[`+  audioPlayerWithSource:`](/documentation/SceneKit/SCNAudioPlayer/audioPlayerWithSource:)

Returns an audio player (creating one if necessary) to play a simple audio source.

[`+  audioPlayerWithAVAudioNode:`](/documentation/SceneKit/SCNAudioPlayer/audioPlayerWithAVAudioNode:)

Returns an audio player (creating one if necessary) to play an audio node.

### Working with Audio Sources

[`audioSource`](/documentation/SceneKit/SCNAudioPlayer/audioSource)

The source of audio played by this player.

[`audioNode`](/documentation/SceneKit/SCNAudioPlayer/audioNode)

The audio node SceneKit uses for mixing audio from this player.

### Responding to Playback

[`willStartPlayback`](/documentation/SceneKit/SCNAudioPlayer/willStartPlayback)

A block called by SceneKit when playback of the player’s audio source is about to begin.

[`didFinishPlayback`](/documentation/SceneKit/SCNAudioPlayer/didFinishPlayback)

A block called by SceneKit when playback of the player’s audio source has completed.

## Relationships

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

### Conforms To

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`CVarArg`](/documentation/Swift/CVarArg)

---

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