---
title: usesApplicationAudioSession
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avspeechsynthesizer/usesapplicationaudiosession
---

# usesApplicationAudioSession

A Boolean value that specifies whether the app manages the audio session.

## Declaration

```swift
var usesApplicationAudioSession: Bool { get set }
```

## Discussion

Discussion If you set this value to false, the system creates a separate audio session to automatically manage speech, interruptions, and mixing and ducking the speech with other audio sources.

## See Also

### Directing speech output

- [mixToTelephonyUplink](avfaudio/avspeechsynthesizer/mixtotelephonyuplink.md)
- [outputChannels](avfaudio/avspeechsynthesizer/outputchannels.md)
- [write(_:toBufferCallback:)](avfaudio/avspeechsynthesizer/write(_:tobuffercallback:).md)
- [AVSpeechSynthesizer.BufferCallback](avfaudio/avspeechsynthesizer/buffercallback.md)
- [write(_:toBufferCallback:toMarkerCallback:)](avfaudio/avspeechsynthesizer/write(_:tobuffercallback:tomarkercallback:).md)
- [AVSpeechSynthesizer.MarkerCallback](avfaudio/avspeechsynthesizer/markercallback.md)