---
title: cardioid
framework: avfaudio
role: symbol
role_heading: Type Property
path: avfaudio/avaudiosession/polarpattern/cardioid
---

# cardioid

A data source that’s most sensitive to sound from the direction of the data source and is nearly insensitive to sound from the opposite direction.

## Declaration

```swift
static let cardioid: AVAudioSession.PolarPattern
```

## Discussion

Discussion The cardioid pattern is heart-shaped and picks up most sound from the front side.

## See Also

### Getting Standard Polar Patterns

- [stereo](avfaudio/avaudiosession/polarpattern/stereo.md)
- [subcardioid](avfaudio/avaudiosession/polarpattern/subcardioid.md)
- [omnidirectional](avfaudio/avaudiosession/polarpattern/omnidirectional.md)