---
title: kAudioUnitSubType_SpeechSynthesis
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/kaudiounitsubtype_speechsynthesis
---

# kAudioUnitSubType_SpeechSynthesis

The speech synthesis component subtype used in the creation of a speech synthesis audio unit. (The component type is kAudioUnitType_Generator.)

## Declaration

```swift
var kAudioUnitSubType_SpeechSynthesis: UInt32 { get }
```