---
title: PHASECardioidDirectivityModelParameters
framework: phase
role: symbol
role_heading: Class
path: phase/phasecardioiddirectivitymodelparameters
---

# PHASECardioidDirectivityModelParameters

An object that directs sound in a heart-shaped curve surrounding a sound source.

## Declaration

```swift
class PHASECardioidDirectivityModelParameters
```

## Overview

Overview This class configures a particular frequency range in the audio spectrum that emits sound in an area defined by a mathematical cardioid. PHASE refers to each frequency segment along the audio spectrum as a subband. This class contains an array of subbands that each can direct sound in a unique cardioid shape. The framework outputs a blend of a frequency’s adjacent subbands for all frequencies that lie outside of those specified in the subbands array. Emit Sound in the Shape of a Cardioid The following code defines a two-band cardioid model. The first subband resembles a heart-shaped cardioid and the second resembles a hypercardioid.

## Topics

### Creating the Cardioid Directivity Model Parameters

- [init(subbandParameters:)](phase/phasecardioiddirectivitymodelparameters/init(subbandparameters:).md)

### Defining Subbands

- [subbandParameters](phase/phasecardioiddirectivitymodelparameters/subbandparameters.md)

## Relationships

### Inherits From

- [PHASEDirectivityModelParameters](phase/phasedirectivitymodelparameters.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Sound Directivity

- [PHASECardioidDirectivityModelSubbandParameters](phase/phasecardioiddirectivitymodelsubbandparameters.md)
- [PHASEConeDirectivityModelParameters](phase/phaseconedirectivitymodelparameters.md)
- [PHASEConeDirectivityModelSubbandParameters](phase/phaseconedirectivitymodelsubbandparameters.md)
- [PHASEDirectivityModelParameters](phase/phasedirectivitymodelparameters.md)