---
title: kRoundTripAACParam_Format
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kroundtripaacparam_format
---

# kRoundTripAACParam_Format

## Declaration

```swift
var kRoundTripAACParam_Format: AudioUnitParameterID { get }
```

## See Also

### Constants

- [kRoundTripAACParam_BitRate](audiotoolbox/kroundtripaacparam_bitrate.md)
- [kRoundTripAACParam_CompressedFormatSampleRate](audiotoolbox/kroundtripaacparam_compressedformatsamplerate.md)
- [kRoundTripAACParam_EncodingStrategy](audiotoolbox/kroundtripaacparam_encodingstrategy.md)
- [kRoundTripAACParam_Quality](audiotoolbox/kroundtripaacparam_quality.md)
- [kRoundTripAACParam_RateOrQuality](audiotoolbox/kroundtripaacparam_rateorquality.md)