# Audio Reverb Filter

> Reference for the Audio Reverb filter, which applies a customized reverb effect to audio signals.

The **Audio Reverb Filter** takes an [Audio Clip](/engine/6000.7/manual/audio/reference/class-audio-clip.md) and distorts it to create a custom reverb effect.

## Properties


**The AudioGroup Inspector displays the configurable properties of an Audio Reverb Filter.:**
![](/api/media?file=/engine/6000.7/media/images/AudioReverbFilter.png)

| ***Property:***       | ***Function:***                                                                                                 |
| --------------------- | --------------------------------------------------------------------------------------------------------------- |
| **Reverb Preset**     | Custom reverb presets, select user to create your own customized reverbs.                                       |
| **Dry Level**         | Mix level of dry signal in output in mB. Ranges from -10000.0 to 0.0. Default is 0.                             |
| **Room**              | Room effect level at low frequencies in mB. Ranges from -10000.0 to 0.0. Default is 0.0.                        |
| **Room HF**           | Room effect high-frequency level in mB. Ranges from -10000.0 to 0.0. Default is 0.0.                            |
| **Room LF**           | Room effect low-frequency level in mB. Ranges from -10000.0 to 0.0. Default is 0.0.                             |
| **Decay Time**        | Reverberation decay time at low-frequencies in seconds. Ranges from 0.1 to 20.0. Default is 1.0.                |
| **Decay HFRatio**     | Decay HF Ratio : High-frequency to low-frequency decay time ratio. Ranges from 0.1 to 2.0. Default is 0.5.      |
| **Reflections Level** | Early reflections level relative to room effect in mB. Ranges from -10000.0 to 1000.0. Default is -10000.0.     |
| **Reflections Delay** | Early reflections delay time relative to room effect in seconds. Ranges from 0 to 0.3. Default is 0.0.          |
| **Reverb Level**      | Late reverberation level relative to room effect in mB. Ranges from -10000.0 to 2000.0. Default is 0.0.         |
| **Reverb Delay**      | Late reverberation delay time relative to first reflection in seconds. Ranges from 0.0 to 0.1. Default is 0.04. |
| **HFReference**       | Reference high frequency in Hz. Ranges from 1000.0 to 20000.0. Default is 5000.0.                               |
| **LFReference**       | Reference low-frequency in Hz. Ranges from 20.0 to 1000.0. Default is 250.0.                                    |
| **Diffusion**         | Reverberation diffusion (echo density) in percent. Ranges from 0.0 to 100.0. Default is 100.0.                  |
| **Density**           | Reverberation density (modal density) in percent. Ranges from 0.0 to 100.0. Default is 100.0.                   |

> **Note:**
>
> These values can only be modified if your **Reverb Preset** is set to **User**, else these values will be grayed out and they will have default values for each preset.