---
title: lowPassCutoff
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiounitdelay/lowpasscutoff
---

# lowPassCutoff

The cutoff frequency above which high frequency content rolls off, in hertz.

## Declaration

```swift
var lowPassCutoff: Float { get set }
```

## Discussion

Discussion The default value is 15000 Hz. The valid range of values is 10 Hz through (sampleRate/2).

## See Also

### Getting and setting the delay values

- [delayTime](avfaudio/avaudiounitdelay/delaytime.md)
- [feedback](avfaudio/avaudiounitdelay/feedback.md)
- [wetDryMix](avfaudio/avaudiounitdelay/wetdrymix.md)