---
title: kAudioUnitSampleFractionBits
framework: Core Audio Types
role: symbol
role_heading: Global Variable
platforms: [iOS 2.0+, iPadOS 2.0+, Mac Catalyst 13.0+, macOS 10.15+, tvOS 9.0+, visionOS 1.0+, watchOS 3.0+]
path: coreaudiotypes/kaudiounitsamplefractionbits
---

# kAudioUnitSampleFractionBits

The number of fractional bits in fixed-point samples.

## Declaration

```swift
var kAudioUnitSampleFractionBits: Int32 { get }
```

## See Also

### Common Types

- [AVAudioInteger](coreaudiotypes/avaudiointeger.md)
- [AVAudioUInteger](coreaudiotypes/avaudiouinteger.md)
- [AudioSessionID](coreaudiotypes/audiosessionid.md)
- [COREAUDIOTYPES_VERSION](coreaudiotypes/coreaudiotypes_version.md)
- [AudioSampleType](coreaudiotypes/audiosampletype.md)
- [AudioUnitSampleType](coreaudiotypes/audiounitsampletype.md)
- [AudioFormatListItem](coreaudiotypes/audioformatlistitem.md)