Parallel compression is a mixing technique that allows you to retain the dynamic range of your track while adding extra punch and presence. This technique is particularly popular in genres that demand both clarity and power, like rock, hip-hop, and electronic music. In this guide, we’ll dive into how parallel compression works, why it’s so effective, and how to apply it to give your mixes that professional edge.
Parallel compression, sometimes referred to as “New York compression,” involves blending a heavily compressed signal with the original, uncompressed signal. The goal is to preserve the natural dynamics of the track, while adding the power and presence that compression can offer. The beauty of this method is that it allows you to apply extreme compression settings without losing the musicality of the performance.
The process starts by duplicating the audio track you want to compress—typically drums, vocals, or bass. One track remains uncompressed, while the other track is compressed heavily using a fast attack and release time. The heavily compressed track adds density and impact, while the original track keeps the natural feel of the performance.
The key here is the balance. By adjusting the level of the compressed track, you can add punch and sustain without completely flattening the dynamics. This gives your mix a bigger sound, without sacrificing the nuances and subtleties of the performance.
Parallel compression is a go-to tool for adding punch and clarity to your mixes. Here’s why:
1.Preserves Dynamics: With traditional compression, the dynamics of a track are reduced, which can make it sound lifeless if overdone. Parallel compression lets you keep the original dynamics intact while enhancing the punch.
2.Adds Presence: This technique brings out the details in your track that might otherwise be lost in a dense mix. For example, parallel compression can make the snare drum crack louder or bring clarity to vocals that might get buried under other instruments.
3.Creates Impact Without Distortion: Unlike heavy compression, which can sometimes add unwanted distortion or make the mix sound flat, parallel compression gives you a clean, punchy sound without any unwanted artifacts.
One of the most common uses of parallel compression is on drums. The snare and kick, in particular, can benefit from this technique, adding more punch and definition. Here’s how you can apply it:
1.Duplicate the Drum Track: Copy the drum track that you want to enhance with parallel compression.
2.Apply Heavy Compression: On the duplicate track, apply heavy compression with a fast attack (around 10-20 ms) and a quick release time (around 50-100 ms). Set the ratio to something extreme, like 8:1 or higher, to really squash the sound.
3.Blend the Tracks: Slowly blend the compressed track back in with the original drum track. Start with the compressed track at a low level and increase it until you hear the punch and presence you’re looking for.
4.Fine-Tune: Adjust the mix until the drums have more impact but still retain their natural dynamics. You should hear the snare pop and the kick punch through without losing any clarity or becoming too distorted.
Parallel compression can also be used to add clarity and fullness to vocals and bass. Here’s how:
•Vocals: For vocals, parallel compression can help make them sit better in the mix, adding body without losing the natural feel. Apply a similar process—duplicate the vocal track, heavily compress the duplicate, and blend it back with the original. Be careful not to overdo it, as vocals can easily become overly compressed and sound unnatural.
•Bass: Parallel compression on bass is a great way to make it stand out in the mix. It allows you to add sustain and weight to the bass without losing the groove. Use a moderate attack time to preserve the transient of the bass while still adding body.
•Attack and Release Settings: The key to parallel compression is setting the right attack and release times. A fast attack catches the transients, while a slower release time ensures the compression doesn’t become too noticeable.
•Use Different Compressors: Don’t be afraid to experiment with different types of compressors, such as FET, VCA, or optical. Each type can add a unique color and character to the track.
•Don’t Overdo It: Parallel compression works best in subtle doses. If you push the compressed track too loud, it can overpower the mix and make it sound unnatural.
•Use EQ with Parallel Compression: Sometimes, you might want to EQ the parallel compressed track to emphasize certain frequencies. For instance, you might add a little more low-end to the kick drum or midrange to the snare to increase its presence.
Final Thoughts on Parallel Compression
Parallel compression is a powerful technique for adding punch and presence to your mixes without sacrificing dynamic range. It allows you to preserve the natural feel of a performance while giving it that extra bit of impact. Whether you’re working on drums, vocals, or bass, parallel compression can elevate your sound and help your tracks stand out.
Need a quick reference for frequencies in mixing? Check out the Audio Frequency Spectrum Poster for a detailed breakdown, perfect for producers and sound engineers.
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