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# queue

The queue on which to execute recognition task handlers and delegate methods.

```
var queue: OperationQueue { get set }
```

## Discussion

The default value of this property is the app’s main queue. Assign a different queue if you want delegate methods and handlers to be executed on a background queue.

The handler you pass to the [`requestAuthorization(_:)`](/documentation/Speech/SFSpeechRecognizer/requestAuthorization(_:)) method does not use this queue.

---

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