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# AVAudioChannelLayout

An object that describes the roles of a set of audio channels.

```
class AVAudioChannelLayout
```

## Overview

The `AVAudioChannelLayout` class is a thin wrapper for Core Audio’s <doc://com.apple.documentation/documentation/CoreAudioTypes/AudioChannelLayout>.

## Topics

### Creating an Audio Channel Layout

[`-  initWithLayout:`](/documentation/AVFAudio/AVAudioChannelLayout/init(layout:))

Creates an audio channel layout object from an existing one.

[`+  layoutWithLayout:`](/documentation/AVFAudio/AVAudioChannelLayout/layoutWithLayout:)

Creates an audio channel layout object from an existing one.

[`-  initWithLayoutTag:`](/documentation/AVFAudio/AVAudioChannelLayout/init(layoutTag:))

Creates an audio channel layout object from a layout tag.

[`+  layoutWithLayoutTag:`](/documentation/AVFAudio/AVAudioChannelLayout/layoutWithLayoutTag:)

Creates an audio channel layout object from an audio channel layout tag.

### Getting Audio Channel Layout Properties

[`AVAudioChannelCount`](/documentation/AVFAudio/AVAudioChannelCount)

The number of audio channels.

[`channelCount`](/documentation/AVFAudio/AVAudioChannelLayout/channelCount)

The number of channels of audio data.

[`layout`](/documentation/AVFAudio/AVAudioChannelLayout/layout)

The underlying audio channel layout.

[`layoutTag`](/documentation/AVFAudio/AVAudioChannelLayout/layoutTag)

The audio channel’s underlying layout tag.

[`-  isEqual:`](/documentation/AVFAudio/AVAudioChannelLayout/isEqual(_:))

Indicates whether another audio channel layout is exactly equal to the current layout.

## Relationships

### Conforms To

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

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

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

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

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

[`NSCoding`](/documentation/Foundation/NSCoding)

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

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

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

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

### Inherits From

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

---

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