The Compressor is your bread and butter in mixing. If you know can really wield EQing and Compression, then you can deal with 80% of all problems when mixing. The Compressor is probably the most used Ableton live device. Even though producers constantly grab the compressor, there are some less known features that can greatly help the mix.
Adding the Auto Feature:
There are two features on the Compressor that can help make things automatic. The first one is the Auto Button. This will automatically decide the release amount compared to the input signal. It makes it quick and easy to let Live determine how long before releasing the compressor. Once this is activated you cannot manually set the Release amount.
Second automatic feature is the Makeup button. Enabling the Makeup button automatically compensates the output level if the threshold and ratio settings change. In other words, if you change the Ratio of the compression, then Live will automatically adjust the output gain. These are both helpful in automating Live’s Compressor.
Expand instead of Compress:
I love using the Expand feature on the Compressor. It’s a little-known gem. With the Compressor set to Expand it acts as an upward expander, and will increase the gain when signals exceed the threshold. With this feature you can make the louder parts louder, giving you a bigger dynamic range. Normally a Compressor pushes the louder parts down, but now with Expand it will increase them if it is over the threshold.