---
title: Speech-Channel Information Constants
framework: Application Services
role: containerSymbol
role_heading: Enumeration
platforms: [macOS 10.0+]
path: applicationservices/1552228-speech-channel_information_constants
---

# Speech-Channel Information Constants

Selectors that can be passed to the `GetSpeechInfo` or `SetSpeechInfo` functions.

## Declaration

```occ
enum : OSType {
    ...
};
```

## Topics

### Constants

- [soStatus](1552228-speech-channel_information_constants/sostatus.md)
- [soErrors](1552228-speech-channel_information_constants/soerrors.md)
- [soInputMode](1552228-speech-channel_information_constants/soinputmode.md)
- [soCharacterMode](1552228-speech-channel_information_constants/socharactermode.md)
- [soNumberMode](1552228-speech-channel_information_constants/sonumbermode.md)
- [soRate](1552228-speech-channel_information_constants/sorate.md)
- [soPitchBase](1552228-speech-channel_information_constants/sopitchbase.md)
- [soPitchMod](1552228-speech-channel_information_constants/sopitchmod.md)
- [soVolume](1552228-speech-channel_information_constants/sovolume.md)
- [soSynthType](1552228-speech-channel_information_constants/sosynthtype.md)
- [soRecentSync](1552228-speech-channel_information_constants/sorecentsync.md)
- [soPhonemeSymbols](1552228-speech-channel_information_constants/sophonemesymbols.md)
- [soCurrentVoice](1552228-speech-channel_information_constants/socurrentvoice.md)
- [soCommandDelimiter](1552228-speech-channel_information_constants/socommanddelimiter.md)
- [soReset](1552228-speech-channel_information_constants/soreset.md)
- [soCurrentA5](1552228-speech-channel_information_constants/socurrenta5.md)
- [soRefCon](1552228-speech-channel_information_constants/sorefcon.md)
- [soTextDoneCallBack](1552228-speech-channel_information_constants/sotextdonecallback.md)
- [soSpeechDoneCallBack](1552228-speech-channel_information_constants/sospeechdonecallback.md)
- [soSyncCallBack](1552228-speech-channel_information_constants/sosynccallback.md)
- [soErrorCallBack](1552228-speech-channel_information_constants/soerrorcallback.md)
- [soPhonemeCallBack](1552228-speech-channel_information_constants/sophonemecallback.md)
- [soWordCallBack](1552228-speech-channel_information_constants/sowordcallback.md)
- [soSynthExtension](1552228-speech-channel_information_constants/sosynthextension.md)
- [soSoundOutput](1552228-speech-channel_information_constants/sosoundoutput.md)
- [soOutputToFileWithCFURL](1552228-speech-channel_information_constants/sooutputtofilewithcfurl.md)
- [soOutputToExtAudioFile](1552228-speech-channel_information_constants/sooutputtoextaudiofile.md)
- [soPhonemeOptions](1552228-speech-channel_information_constants/sophonemeoptions.md)
- [soOutputToAudioDevice](1552228-speech-channel_information_constants/sooutputtoaudiodevice.md)