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# Converter Audio Unit Subtypes

Audio data format converter audio unit subtypes for audio units provided by Apple.

## Topics

### Constants

[`var kAudioUnitSubType_AUConverter: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_AUConverter)

[`var kAudioUnitSubType_AUiPodTimeOther: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_AUiPodTimeOther)

[`var kAudioUnitSubType_DeferredRenderer: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_DeferredRenderer)

[`var kAudioUnitSubType_Merger: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_Merger)

[`var kAudioUnitSubType_MultiSplitter: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_MultiSplitter)

[`var kAudioUnitSubType_NewTimePitch: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_NewTimePitch)

[`var kAudioUnitSubType_RoundTripAAC: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_RoundTripAAC)

[`var kAudioUnitSubType_Splitter: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_Splitter)

[`var kAudioUnitSubType_Varispeed: UInt32`](/documentation/AudioToolbox/kAudioUnitSubType_Varispeed)

An audio unit that can control playback rate. As the playback rate increases, so does pitch. This subtype provides a generic view, making it suitable for UI and programmatic context. macOS provides realtime and offline audio units of this subtype.


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