# isVirtual

> True if all sounds played by the AudioSource, such as main sound started by Play() or playOnAwake, and one-shots are culled by the audio system.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.AudioModule

```csharp
public bool isVirtual { get; }
```

### Remarks

A sound is culled when its resulting volume is lower than the volumes of the N loudest voices, where N is the number of maximum audible sounds specified in the audio Project Settings or via [AudioConfiguration](/engine/6000.0/script-reference/unityengine/audioconfiguration.md).