Aneeshthesia
Compression for Dummies

A compressor is a signal processor that alters the loudness of a signal; as the name implies, it compresses the dynamic range of an audio signal. This indicates that it softens the loud signal and makes the soft signal a little louder, reducing the disparity between the loudest and softest portions of an audio stream.
Compression is unavoidable in a decent mix; not understanding how to utilize the compressor correctly might ruin your mix.
One of the most crucial mixing techniques you can learn is how to operate a compressor.
Parameters of a compressor.
The majority of compressors have five parameters in common: ratio, threshold, attack, release, and makeup gain. And this is extremely important that you know your way around a compressor very well.

Threshold
Ratio
Attack
Release
Make-up Gain