---
title: pattern
framework: phase
role: symbol
role_heading: Instance Property
path: phase/phasecardioiddirectivitymodelsubbandparameters/pattern
---

# pattern

A shape that determines the direction of sound.

## Declaration

```swift
var pattern: Double { get set }
```

## Discussion

Discussion The framework clamps the value to the range [0.0, 1.0]. The default value is 0.0, which creates an omnidirectional shape. The value 0.5 creates a cardioid shape. The value 1.0 creates a dipole shape.

## See Also

### Shaping Directivity

- [sharpness](phase/phasecardioiddirectivitymodelsubbandparameters/sharpness.md)