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

# format

An AudioStreamBasicDescription that describes the current data format for the tap. This is the format of the data that will be accessible in any aggregate device that contains the tap.

## Declaration

```swift
var format: AudioStreamBasicDescription { get throws }
```