---
title: frequency
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiouniteqfilterparameters/frequency
---

# frequency

The frequency of the equalizer filter, in hertz.

## Declaration

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

## Discussion

Discussion The valid range of values is 20 Hz through (SampleRate/2).

## See Also

### Getting and Setting Equalizer Filter Parameters

- [bandwidth](avfaudio/avaudiouniteqfilterparameters/bandwidth.md)
- [bypass](avfaudio/avaudiouniteqfilterparameters/bypass.md)
- [filterType](avfaudio/avaudiouniteqfilterparameters/filtertype.md)
- [gain](avfaudio/avaudiouniteqfilterparameters/gain.md)