---
title: AVAudioSessionSilenceSecondaryAudioHintTypeKey
framework: avfaudio
role: symbol
role_heading: Global Variable
path: avfaudio/avaudiosessionsilencesecondaryaudiohinttypekey
---

# AVAudioSessionSilenceSecondaryAudioHintTypeKey

A user info key that you use to retrieve the silence secondary audio hint type.

## Declaration

```swift
let AVAudioSessionSilenceSecondaryAudioHintTypeKey: String
```

## Discussion

Discussion The associated value is an NSNumber representing the silence secondary audio hint type. See AVAudioSession.SilenceSecondaryAudioHintType for supported values.