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# kAudioQueueProperty_StreamDescription

An audio queue’s data format.

```
var kAudioQueueProperty_StreamDescription: AudioQueuePropertyID { get }
```

## Discussion

Value is a read-only <doc://com.apple.documentation/documentation/CoreAudioTypes/AudioStreamBasicDescription> structure, indicating an audio queue’s data format. Primarily useful for obtaining a complete ASBD when recording, in cases where you initially specify a sample rate of `0`.

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