---
title: ioBufferDuration
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiosession/iobufferduration
---

# ioBufferDuration

The current I/O buffer duration, in seconds.

## Declaration

```swift
var ioBufferDuration: TimeInterval { get }
```

## See Also

### Configuring I/O buffer duration

- [preferredIOBufferDuration](avfaudio/avaudiosession/preferrediobufferduration.md)
- [setPreferredIOBufferDuration(_:)](avfaudio/avaudiosession/setpreferrediobufferduration(_:).md)