---
title: perceptualDuration
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/caspringanimation/perceptualduration
---

# perceptualDuration

## Declaration

```swift
var perceptualDuration: CFTimeInterval { get }
```

## See Also

### Instance Properties

- [allowsOverdamping](quartzcore/caspringanimation/allowsoverdamping.md)
- [bounce](quartzcore/caspringanimation/bounce.md)