# Audio Echo Effect

> Reference for the Audio Echo Effect, which repeats a sound after a given delay.

The **Audio Echo Effect** repeats a sound after a given **Delay**, attenuating the repetitions based on the **Decay Ratio**.

## Properties


**The AudioGroup Inspector displays the configurable properties of an Audio Echo Effect.:**
![](/api/media?file=/engine/6000.3/media/images/AudioEchoEffect.png)

| ***Property:***  | ***Function:***                                                                                             |
| ---------------- | ----------------------------------------------------------------------------------------------------------- |
| **Delay**        | Echo delay in ms. 10 to 5000. Default = 500.                                                                |
| **Decay**        | Echo decay per delay. 0 to 100%. 100% = No decay, 0% = total decay (ie simple 1 line delay). Default = 50%. |
| **Max channels** | Maximum number of supported channels from 0 to 16 (default = 0).                                            |
| **Drymix**       | Volume of original signal to pass to output. 0 to 100%. Default = 100%.                                     |
| **Wetmix**       | Volume of echo signal to pass to output. 0 to 100%. Default = 100%.                                         |

## Details

The **Wetmix** value determines the amplitude of the filtered signal, where the **Drymix** determines the amplitude of the unfiltered sound output.

Hard surfaces reflects the propagation of sound. For example a large canyon can be made more convincing with the Audio Echo Filter.