---
title: kAudioConverterSampleRateConverterComplexity_Mastering
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudioconvertersamplerateconvertercomplexity_mastering
---

# kAudioConverterSampleRateConverterComplexity_Mastering

Specifies a mastering-quality sample rate conversion algorithm. This provides the highest quality and is, computationally, the most expensive option.

## Declaration

```swift
var kAudioConverterSampleRateConverterComplexity_Mastering: UInt32 { get }
```

## See Also

### Constants

- [kAudioConverterSampleRateConverterComplexity_Linear](audiotoolbox/kaudioconvertersamplerateconvertercomplexity_linear.md)
- [kAudioConverterSampleRateConverterComplexity_Normal](audiotoolbox/kaudioconvertersamplerateconvertercomplexity_normal.md)
- [kAudioConverterSampleRateConverterComplexity_MinimumPhase](audiotoolbox/kaudioconvertersamplerateconvertercomplexity_minimumphase.md)