---
title: kReverbParam_FilterGain
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kreverbparam_filtergain
---

# kReverbParam_FilterGain

## Declaration

```swift
var kReverbParam_FilterGain: AudioUnitParameterID { get }
```

## See Also

### Constants

- [kReverbParam_FilterBandwidth](audiotoolbox/kreverbparam_filterbandwidth.md)
- [kReverbParam_FilterEnable](audiotoolbox/kreverbparam_filterenable.md)
- [kReverbParam_FilterFrequency](audiotoolbox/kreverbparam_filterfrequency.md)
- [kReverbParam_FilterType](audiotoolbox/kreverbparam_filtertype.md)