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# addSpatialMixerParameters(identifier:source:listener:)

Adds runtime parameters for a spatial mixer.

```
func addSpatialMixerParameters(identifier: String, source: PHASESource, listener: PHASEListener)
```

## Parameters

`identifier`

The name of the spatial submixer.

`source`

A location in the scene that plays audio.

`listener`

An object that receives a source audio signal. The mixer scales and orients the sound the listener receives based on its [`transform`](/documentation/PHASE/PHASEObject/transform).

---

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