What is a Sidechain?

Sidechain compression is an audio production technique that has become increasingly popular over the years, especially in electronic dance music (EDM). It involves using a compressor to duck the volume of one track (the “sidechain”) based on the level of another track (the “source”). In this article, we will explore what a sidechain is and how it can be used to create unique and dynamic soundscapes.

What is a Sidechain?

A sidechain is an audio signal that is used to trigger a dynamic effect on another audio signal. In the case of sidechain compression, the sidechain is used to control the level of the source audio signal. The source audio signal is compressed whenever the level of the sidechain audio signal exceeds a certain threshold. This results in the volume of the source audio being reduced in volume in time with the sidechain audio.

How does Sidechain Compression work?

Sidechain compression is achieved using a compressor plugin on the source audio track. The compressor is set to receive its sidechain input from another audio track. The threshold of the compressor is set to a level that allows the compressor to react to the sidechain audio. When the level of the sidechain audio exceeds the threshold, the compressor reduces the volume of the source audio. This creates a pumping effect that can be used to create a sense of rhythm and groove.

What are the benefits of Sidechain Compression?

There are several benefits to using sidechain compression in music production. These include:

  1. Creating space in the mix: Sidechain compression can be used to create space in the mix by allowing certain elements to cut through the mix more clearly. For example, a bassline can be sidechained to the kick drum, allowing the kick drum to be heard more clearly.
  2. Adding rhythm and groove: Sidechain compression can be used to create a sense of rhythm and groove in a track. By sidechaining a pad or a synth to a rhythmic element, such as a hi-hat, you can create a pulsing effect that drives the track forward.
  3. Adding dynamics: Sidechain compression can be used to add dynamics to a track by creating a sense of movement and variation. By using sidechain compression on an instrument like a guitar or a vocal, you can create a dynamic effect that emphasizes certain parts of the performance.

Conclusion

In conclusion, sidechain compression is a powerful tool that can be used to create unique and dynamic soundscapes in music production. By using a sidechain to trigger a compressor, you can create a pulsing effect that adds rhythm and groove to your tracks. Sidechain compression can also be used to create space in the mix and add dynamics to your performances. With its versatility and creative potential, it’s no wonder that sidechain compression has become a staple of modern music production.

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