---
title: kSpeechRelativeDuration
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/kspeechrelativeduration
---

# kSpeechRelativeDuration

## Declaration

```swift
var kSpeechRelativeDuration: Int32 { get }
```

## Discussion

Discussion Specify the duration in the tune, relative to the current speech rate (this makes it easier to reuse the tune at a different rate).