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# VZVirtioSoundDeviceInputStreamConfiguration

A PCM stream of input audio data, such as from a microphone.

```
class VZVirtioSoundDeviceInputStreamConfiguration
```

## Overview

This device represents a PCM stream of audio data. Don’t instantiate `VZVirtioSoundDeviceStreamConfiguration` directly. Instead, use one of its subclasses such as [`VZVirtioSoundDeviceInputStreamConfiguration`](/documentation/Virtualization/VZVirtioSoundDeviceInputStreamConfiguration) or [`VZVirtioSoundDeviceOutputStreamConfiguration`](/documentation/Virtualization/VZVirtioSoundDeviceOutputStreamConfiguration).

## Topics

### Creating an input stream configuration

[`init()`](/documentation/Virtualization/VZVirtioSoundDeviceInputStreamConfiguration/init())

Creates a new sound device input stream configuration.

### Accessing the sound source

[`source`](/documentation/Virtualization/VZVirtioSoundDeviceInputStreamConfiguration/source)

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

### Input source

[`VZHostAudioInputStreamSource`](/documentation/Virtualization/VZHostAudioInputStreamSource)

The host audio input stream source that provides audio from the host system’s default input device.

[`VZAudioInputStreamSource`](/documentation/Virtualization/VZAudioInputStreamSource)

The base class for an audio input stream source.


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