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# inputIsAvailableChanged(_:)

Called after the availability of audio input changes on a device.

```
optional func inputIsAvailableChanged(_ isInputAvailable: Bool)
```

## Parameters

`isInputAvailable`

<doc://com.apple.documentation/documentation/Swift/true> if audio input is now available, or <doc://com.apple.documentation/documentation/Swift/false> if it is not.

## Discussion

---

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