---
title: AudioClassID
framework: coreaudio
role: symbol
role_heading: Type Alias
path: coreaudio/audioclassid
---

# AudioClassID

## Declaration

```swift
typealias AudioClassID = UInt32
```

## Discussion

Discussion AudioClassIDs are used to identify the class of an AudioObject.

## See Also

### Data Types

- [AudioDeviceID](coreaudio/audiodeviceid.md)
- [AudioDeviceIOBlock](coreaudio/audiodeviceioblock.md)
- [AudioDeviceIOProc](coreaudio/audiodeviceioproc.md)
- [AudioDeviceIOProcID](coreaudio/audiodeviceioprocid.md)
- [AudioDevicePropertyID](coreaudio/audiodevicepropertyid.md)
- [AudioDevicePropertyListenerProc](coreaudio/audiodevicepropertylistenerproc.md)
- [AudioHardwarePropertyID](coreaudio/audiohardwarepropertyid.md)
- [AudioHardwarePropertyListenerProc](coreaudio/audiohardwarepropertylistenerproc.md)
- [AudioObjectID](coreaudio/audioobjectid.md)
- [AudioObjectPropertyElement](coreaudio/audioobjectpropertyelement.md)
- [AudioObjectPropertyListenerBlock](coreaudio/audioobjectpropertylistenerblock.md)
- [AudioObjectPropertyListenerProc](coreaudio/audioobjectpropertylistenerproc.md)
- [AudioObjectPropertyScope](coreaudio/audioobjectpropertyscope.md)
- [AudioObjectPropertySelector](coreaudio/audioobjectpropertyselector.md)
- [AudioStreamID](coreaudio/audiostreamid.md)