---
title: identifier
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsspeechsynthesizer/voiceattributekey/identifier
---

# identifier

A unique string identifying the voice. The identifiers of the system voices are listed in Listing 1.

## Declaration

```swift
static let identifier: NSSpeechSynthesizer.VoiceAttributeKey
```

## See Also

### Voice Attribute Keys

- [name](appkit/nsspeechsynthesizer/voiceattributekey/name.md)
- [age](appkit/nsspeechsynthesizer/voiceattributekey/age.md)
- [gender](appkit/nsspeechsynthesizer/voiceattributekey/gender.md)
- [demoText](appkit/nsspeechsynthesizer/voiceattributekey/demotext.md)
- [localeIdentifier](appkit/nsspeechsynthesizer/voiceattributekey/localeidentifier.md)
- [supportedCharacters](appkit/nsspeechsynthesizer/voiceattributekey/supportedcharacters.md)
- [individuallySpokenCharacters](appkit/nsspeechsynthesizer/voiceattributekey/individuallyspokencharacters.md)