What is Compression?

Compression is a technique used in audio mixing to control the dynamic range of a sound source. It helps to balance out the volume levels by reducing the difference between the loudest and softest parts of a mix.

Here’s how it works:

1. Set the Threshold: The threshold is the level at which the compression will start to take effect. You should set it so that it’s just below the highest peak of the audio that you want to compress.
2. Ratio: The ratio determines how much compression will be applied to the audio once it crosses the threshold. A ratio of 4:1 means that for every 4dB the audio goes over the threshold, it will only be allowed to increase by 1dB.
3. Attack: The attack determines how quickly the compression will start to take effect once the audio crosses the threshold.
4. Release: The release determines how quickly the compression will stop after the audio goes back below the threshold.
5. Makeup Gain: After compressing the audio, the overall volume will be reduced. The makeup gain compensates for this reduction and boosts the volume of the audio back to its original level.

It’s important to use compression carefully, as too much can lead to a “squashed” or lifeless mix. Experiment and make adjustments until you find the right balance.