---
title: inputMuteStateChangeNotification
framework: avfaudio
role: symbol
role_heading: Type Property
path: avfaudio/avaudioapplication/inputmutestatechangenotification
---

# inputMuteStateChangeNotification

A notification the system posts when the app’s audio input mute state changes.

## Declaration

```swift
class let inputMuteStateChangeNotification: NSNotification.Name
```

## Topics

### User information keys

- [muteStateKey](avfaudio/avaudioapplication/mutestatekey.md)

## See Also

### Managing audio input mute state

- [isInputMuted](avfaudio/avaudioapplication/isinputmuted.md)
- [setInputMuted(_:)](avfaudio/avaudioapplication/setinputmuted(_:).md)
- [setInputMuteStateChangeHandler(_:)](avfaudio/avaudioapplication/setinputmutestatechangehandler(_:).md)