# id

> Unique identifier for this instance.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Experimental.Audio](/engine/6000.6/script-reference/unityengine/experimental/audio.md)
* **Assembly:** UnityEngine.AudioModule

```csharp
public uint id { get; }
```

### Remarks

This is the id that is expected when invoking the native function pointer consumeSampleFramesNativeFunction. This is also the id that is passed in to the native event handlers of type [AudioSampleProvider.SampleFramesEventNativeFunction](/engine/6000.6/script-reference/unityengine/experimental/audio/audiosampleprovider/sampleframeseventnativefunction.md).

Identifiers are not recycled throuhout the application' lifetime.