The Compressor sits in the Audio section of the Properties panel, after the EQ. It turns down the audio above a threshold, then makeup gain can bring the whole level back up. The preview and the export produce the same result.
How to use it
- Select a layer with audio and open the Audio section in Properties.
- Click Add Compressor.
- Lower Threshold until loud parts are being reduced, set Ratio, then raise Makeup to restore level.
A small graph shows the compressor's input/output curve and the threshold.
Header controls
| Control | What it does |
|---|---|
| Switch | Turns the compressor on or bypasses it. |
| Reset | Back to the default settings. |
| Remove | Takes the compressor off the channel. |
Parameters
| Name | What it does | Default / range |
|---|---|---|
| Threshold | Level above which gain is reduced. | −18 dB, −60–0 dB |
| Ratio | How much signal over the threshold is reduced. 4:1 lets 1 dB through for every 4 dB over. | 4:1, 1–20:1 |
| Knee | Width of the soft transition around the threshold. | 6 dB, 0–24 dB |
| Attack | How quickly gain reduction starts. | 10 ms, 0.1–200 ms |
| Release | How quickly gain recovers. | 120 ms, 5–2000 ms |
| Makeup | Gain added after compression. | 0 dB, −12–24 dB |
Tips
- At a Ratio of 1:1 and 0 dB Makeup the compressor does nothing.