# Audio Compressor Effect

> Reference for the Audio Compressor Effect, which compresses an audio signal's dynamic range.

The **Audio Compressor Effect** reduces the volume of loud sounds or amplifies quiet sounds by narrowing or "compressing" an audio signal's dynamic range.

This compressor is a limiter with a fixed ratio of ∞:1. This means that the compressor clamps the signal output when it reaches the threshold.

## Properties


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

| ***Property:***  | ***Function:***                                                                      |
| ---------------- | ------------------------------------------------------------------------------------ |
| **Threshold**    | Threshold level in dB (range 0 to -60dB, default = 0dB).                             |
| **Attack**       | The rate the effect is applied in ms. (range 10.0 to 200.0 ms, default = 50.0 ms).   |
| **Release**      | The rate the effect is released in ms. (range 20.0 to 1000.0 ms, default = 50.0 ms). |
| **Make up gain** | Make up gain level in dB (range 0 to 30dB, default = 0dB).                           |