---
title: AudioSessionID
framework: Core Audio Types
role: symbol
role_heading: Type Alias
platforms: [iOS 14.0+, iPadOS 14.0+, Mac Catalyst 13.0+, macOS 11.0+, tvOS 14.0+, visionOS 1.0+, watchOS 7.0+]
path: coreaudiotypes/audiosessionid
---

# AudioSessionID

A unique identifier of an audio session.

## Declaration

```swift
typealias AudioSessionID = UInt32
```

## See Also

### Common Types

- [AVAudioInteger](coreaudiotypes/avaudiointeger.md)
- [AVAudioUInteger](coreaudiotypes/avaudiouinteger.md)
- [kAudioUnitSampleFractionBits](coreaudiotypes/kaudiounitsamplefractionbits.md)
- [COREAUDIOTYPES_VERSION](coreaudiotypes/coreaudiotypes_version.md)
- [AudioSampleType](coreaudiotypes/audiosampletype.md)
- [AudioUnitSampleType](coreaudiotypes/audiounitsampletype.md)
- [AudioFormatListItem](coreaudiotypes/audioformatlistitem.md)