---
title: volume
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avspeechutterance/volume
---

# volume

The volume the speech synthesizer uses when speaking the utterance.

## Declaration

```swift
var volume: Float { get set }
```

## Discussion

Discussion Before enqueing the utterance, set this property to a value within the range of 0.0 for silent to 1.0 for loudest volume. The default value is 1.0. Setting this after enqueing the utterance has no effect.

## See Also

### Configuring an utterance

- [voice](avfaudio/avspeechutterance/voice.md)
- [pitchMultiplier](avfaudio/avspeechutterance/pitchmultiplier.md)
- [prefersAssistiveTechnologySettings](avfaudio/avspeechutterance/prefersassistivetechnologysettings.md)