---
title: voicing
framework: speech
role: symbol
role_heading: Instance Property
path: speech/sfvoiceanalytics/voicing
---

# voicing

The likelihood of a voice in each frame of a transcription segment.

## Declaration

```swift
@NSCopying var voicing: SFAcousticFeature { get }
```

## Discussion

Discussion The voicing value is expressed as a probability in the range [0.0, 1.0].

## See Also

### Analyzing voice

- [SFAcousticFeature](speech/sfacousticfeature.md)
- [pitch](speech/sfvoiceanalytics/pitch.md)
- [jitter](speech/sfvoiceanalytics/jitter.md)
- [shimmer](speech/sfvoiceanalytics/shimmer.md)