---
title: outputBusy
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsspeechsynthesizer/speechpropertykey/statuskey/outputbusy
---

# outputBusy

Indicates whether the synthesizer is currently producing speech.

## Declaration

```swift
static let outputBusy: NSSpeechSynthesizer.SpeechPropertyKey.StatusKey
```

## Discussion

Discussion A synthesizer is considered to be producing speech even at some times when no audio data is being produced through the computer’s speaker. This occurs, for example, when the synthesizer is processing input, but has not yet initiated speech or when speech output is paused.

## See Also

### Status Keys

- [numberOfCharactersLeft](appkit/nsspeechsynthesizer/speechpropertykey/statuskey/numberofcharactersleft.md)
- [outputPaused](appkit/nsspeechsynthesizer/speechpropertykey/statuskey/outputpaused.md)
- [phonemeCode](appkit/nsspeechsynthesizer/speechpropertykey/statuskey/phonemecode.md)