---
title: streams
framework: Core Audio
role: symbol
role_heading: Instance Property
platforms: [macOS 15.0+]
path: coreaudio/audiohardwaredevice/streams
---

# streams

An array of AudioHardwareStreams that represent the IO streams of the device.

## Declaration

```swift
var streams: [AudioHardwareStream] { get throws }
```

## Discussion

Discussion If a notification is received for this property, any cached stream objects for the device become invalid and need to be re-fetched.