---
title: fActualNumSampleFrames
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.4+]
path: iokit/ioaudiobufferdatadescriptor/1584546-factualnumsampleframes
---

# fActualNumSampleFrames

## Declaration

```occ
UInt32 fActualNumSampleFrames;
```