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# AVSampleBufferAudioRenderer

An object used to decompress audio and play compressed or uncompressed audio.

```
class AVSampleBufferAudioRenderer
```

## Overview

You must add an instance of this class to an [`AVSampleBufferRenderSynchronizer`](/documentation/AVFoundation/AVSampleBufferRenderSynchronizer) before queuing the first sample buffer.

## Topics

### Determining rendering status

[`status`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/status)

The status of the audio renderer.

[`AVQueuedSampleBufferRenderingStatus`](/documentation/AVFoundation/AVQueuedSampleBufferRenderingStatus)

The statuses for sample buffer rendering.

### Removing queued buffers

[`flush(fromSourceTime:completionHandler:)`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/flush(fromSourceTime:completionHandler:))

Flushes queued sample buffers with presentation time stamps later than or equal to the specified time.

[`AVSampleBufferAudioRendererFlushTimeKey`](/documentation/AVFoundation/AVSampleBufferAudioRendererFlushTimeKey)

The key that indicates the presentation timestamp of the first queued sample that was flushed.

### Configuring time and pitch

[`audioTimePitchAlgorithm`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/audioTimePitchAlgorithm)

The processing algorithm used to manage audio pitch at different rates.

[`AVAudioTimePitchAlgorithm`](/documentation/AVFoundation/AVAudioTimePitchAlgorithm)

An algorithm used to set the audio pitch as the rate changes.

### Configuring audio spatialization

[`allowedAudioSpatializationFormats`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/allowedAudioSpatializationFormats)

The source audio channel layouts the audio renderer supports for spatialization.

### Managing audio output

[`volume`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/volume)

The current audio volume for the audio renderer.

[`isMuted`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/isMuted)

A Boolean value that indicates whether audio for the renderer is in a muted state.

[`audioOutputDeviceUniqueID`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/audioOutputDeviceUniqueID)

The unique identifier of the output device used to play audio.

### Responding to errors

[`error`](/documentation/AVFoundation/AVSampleBufferAudioRenderer/error)

The error that caused the renderer to no longer render sample buffers.


---

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