---
title: kSpeechRelativeDuration
framework: Application Services
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.6+]
path: applicationservices/1552233-phoneme_generation_options/kspeechrelativeduration
---

# kSpeechRelativeDuration

## Declaration

```occ
kSpeechRelativeDuration = 4
```

## 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).