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# AVSampleRateConverterAlgorithmKey

A string value that represents the sample rate converter algorithm to use.

```
let AVSampleRateConverterAlgorithmKey: String
```

## Topics

### Supported algorithms

[`AVSampleRateConverterAlgorithm_Normal`](/documentation/AVFAudio/AVSampleRateConverterAlgorithm_Normal)

The usual encoder bit rate strategy.

[`AVSampleRateConverterAlgorithm_MinimumPhase`](/documentation/AVFAudio/AVSampleRateConverterAlgorithm_MinimumPhase)

The minimum phase encoder bit rate strategy.

[`AVSampleRateConverterAlgorithm_Mastering`](/documentation/AVFAudio/AVSampleRateConverterAlgorithm_Mastering)

The mastering encoder bit rate strategy.


---

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