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# Audio Unit Sample Rate Converter Complexity

Quality levels for the audio sample-rate conversion algorithm.

## Topics

### Constants

[`kAudioUnitSampleRateConverterComplexity_Linear`](/documentation/AudioToolbox/kAudioUnitSampleRateConverterComplexity_Linear)

Basic sample rate conversion using linear interpolation. Fast, but lower quality.

[`kAudioUnitSampleRateConverterComplexity_Mastering`](/documentation/AudioToolbox/kAudioUnitSampleRateConverterComplexity_Mastering)

Mastering quality sample rate conversion. More computationally expensive.

[`kAudioUnitSampleRateConverterComplexity_Normal`](/documentation/AudioToolbox/kAudioUnitSampleRateConverterComplexity_Normal)


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