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# inputParameters

An array of input parameters for the mix.

```
var inputParameters: [AVAudioMixInputParameters] { get }
```

## Discussion

The array contains instances of [`AVAudioMixInputParameters`](/documentation/AVFoundation/AVAudioMixInputParameters).

> Note:
> An instance of ``doc://com.apple.avfoundation/documentation/AVFoundation/AVAudioMixInputParameters`` isn’t required for each audio track that contributes to the mix. Audio for those without associated `AVAudioMixInputParameters` objects are included in the mix and processed according to the default behavior.

---

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