---
title: "subscript(_:)"
framework: audiotoolbox
role: symbol
role_heading: Instance Subscript
path: "audiotoolbox/auaudiounitbusarray/subscript(_:)"
---

# subscript(_:)

Returns the bus at the specified index.

## Declaration

```swift
subscript(index: Int) -> AUAudioUnitBus { get }
```

## Parameters

- `index`: An index corresponding to a bus in the array.

## Return Value

Return Value The bus located at the specified index.

## See Also

### Bus Array Methods and Properties

- [count](audiotoolbox/auaudiounitbusarray/count.md)
- [isCountChangeable](audiotoolbox/auaudiounitbusarray/iscountchangeable.md)
- [ownerAudioUnit](audiotoolbox/auaudiounitbusarray/owneraudiounit.md)
- [busType](audiotoolbox/auaudiounitbusarray/bustype.md)
- [setBusCount(_:)](audiotoolbox/auaudiounitbusarray/setbuscount(_:).md)
- [addObserver(toAllBusses:forKeyPath:options:context:)](audiotoolbox/auaudiounitbusarray/addobserver(toallbusses:forkeypath:options:context:).md)
- [removeObserver(fromAllBusses:forKeyPath:context:)](audiotoolbox/auaudiounitbusarray/removeobserver(fromallbusses:forkeypath:context:).md)