Parallel compression, or 'New York compression', is a cornerstone technique in modern music production. It allows producers to enhance the power and presence of a mix while retaining the natural dynamics of the original audio. This method involves mixing an uncompressed signal with a compressed version of itself, providing a blend that highlights the best of both worlds.

Understanding Parallel Compression

Parallel compression works by duplicating a track, heavily compressing one version, and then mixing it back with the original. The compressed track often uses extreme settings to reduce its dynamic range significantly, making quiet sounds louder and creating a thick, intense sound. When blended with the original, the track gains body and presence without squashing the dynamics, preserving the natural transient details.

Why Use Parallel Compression?

• Enhanced Loudness and Presence: Effective for making elements like drums punch through the mix without peaking, especially in live drum mixing where capturing the raw energy without clipping is crucial.
• Maintaining Dynamics: Unlike traditional compression, which can flatten a track's dynamic range if overused, parallel compression adds weight and volume without compromising dynamic integrity.
• Versatility: It can be applied to almost any element in a mix, from vocals and guitars to keyboards and even full mixes.

Steps to Apply Parallel Compression Effectively

1. Setup a Send Channel: Route your original signal to an auxiliary channel. This setup allows you to apply compression independently of the original track.
2. Apply Heavy Compression: On the send channel, set a high ratio, fast attack, and fast release on your compressor. Adjust the threshold so that the compressor acts aggressively on the signal.
3. Mix the Signals: Gradually blend the compressed signal back with the original. Start with the send level down and increase it until you achieve the desired effect.
4. Tweak and Refine: Adjust the compressor settings and the blend ratio until you achieve a balanced sound that enhances the track without overwhelming it.

Practical Applications

• Drums: Bring out the energy and room ambience in drum tracks, making them feel more powerful and cohesive.
• Vocals: Add richness and fullness to vocals, ensuring they sit prominently in the mix without constant peaks and troughs.
• Bass: Tighten up a bass performance by enhancing its body and sustain, making it more consistent across various playback systems.

Conclusion

Parallel compression is a tool that, when mastered, can significantly enhance the quality and impact of your mixes. It allows for subtle yet powerful control of the dynamics of your tracks, ensuring that they sound polished and professional. By integrating this technique into your regular mixing practices, you'll notice an immediate improvement in the depth and presence of your audio productions.