---
title: audioMix
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avassetexportsession/audiomix
---

# audioMix

The parameters for audio mixing and an indication of whether to enable nondefault audio mixing for export.

## Declaration

```swift
@NSCopying var audioMix: AVAudioMix? { get set }
```

## Discussion

Discussion This value is key-value observable.

## See Also

### Configuring audio output

- [audioTimePitchAlgorithm](avfoundation/avassetexportsession/audiotimepitchalgorithm.md)