---
title: source
framework: virtualization
role: symbol
role_heading: Instance Property
path: virtualization/vzvirtiosounddeviceinputstreamconfiguration/source
---

# source

An audio stream source that defines how the host supplies audio data for the guest.

## Declaration

```swift
var source: VZAudioInputStreamSource? { get set }
```

## Discussion

Discussion Not specifying a source results in a default handler that produces audio silence. The default is nil.

## See Also

### Related Documentation

- [VZAudioInputStreamSource](virtualization/vzaudioinputstreamsource.md)
- [VZHostAudioInputStreamSource](virtualization/vzhostaudioinputstreamsource.md)