---
title: Synthesizer Option Keys
framework: applicationservices
role: collectionGroup
role_heading: API Collection
path: applicationservices/speech_synthesis_manager/synthesizer_option_keys
---

# Synthesizer Option Keys

Keys used to specify synthesizer options.

## Topics

### Constants

- [kSpeechNoEndingProsody](applicationservices/kspeechnoendingprosody.md)
- [kSpeechNoSpeechInterrupt](applicationservices/kspeechnospeechinterrupt.md)
- [kSpeechPreflightThenPause](applicationservices/kspeechpreflightthenpause.md)