---
title: soPitchBase
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/sopitchbase
---

# soPitchBase

## Declaration

```swift
var soPitchBase: OSType { get }
```

## Discussion

Discussion Get or set the speech channel’s baselinespeech pitch. This selector is intended for use by the Speech SynthesisManager; ordinarily, an application uses the GetSpeechPitch(_:_:) and SetSpeechPitch(_:_:) functions.The speechInfo parameteris a pointer to a variable of type Fixed. This selector works with both the GetSpeechInfo and SetSpeechInfo functions. note: The change in speech pitch may not be noticeable until the next sentence or paragraph is spoken.