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# SFAcousticFeature

The value of a voice analysis metric.

```
class SFAcousticFeature
```

## Topics

### Inspecting a feature

[`frameDuration`](/documentation/Speech/SFAcousticFeature/frameDuration)

The duration of the audio frame.

[`acousticFeatureValuePerFrame`](/documentation/Speech/SFAcousticFeature/acousticFeatureValuePerFrame-5krkk)

An array of feature values, one value per audio frame, corresponding to a transcript segment of recorded audio.

[`acousticFeatureValuePerFrame`](/documentation/Speech/SFAcousticFeature/acousticFeatureValuePerFrame-gsz5)

An array of feature values, one value per audio frame, corresponding to a transcript segment of recorded audio.


---

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