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# referenceDistance

The minimum distance at which the node applies attenuation, in meters.

```
var referenceDistance: Float { get set }
```

## Discussion

The default value is `1.0` meter.

This property is relevant for [`AVAudioEnvironmentDistanceAttenuationModel.inverse`](/documentation/AVFAudio/AVAudioEnvironmentDistanceAttenuationModel/inverse) and [`AVAudioEnvironmentDistanceAttenuationModel.linear`](/documentation/AVFAudio/AVAudioEnvironmentDistanceAttenuationModel/linear).

---

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