---
title: kAudioUnitProperty_SpeechChannel
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/kaudiounitproperty_speechchannel
---

# kAudioUnitProperty_SpeechChannel

The speech channel property in the speech synthesis audio unit.

## Declaration

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