Sidechain Compression | Samplified

Sidechain Compression

by Anders Johanson April 29, 2020 6 min read

Sidechain Compression

audio recordings and controlling dynamic range, it is now used more creatively as an artistic effect. Compression is a technique that reduces the dynamic range of an audio signal. Dynamic range refers to the difference between the loudest and softest parts of a sound. By compressing the dynamic range, the loud parts are brought down in volume, while the soft parts are brought up, resulting in a more controlled and balanced sound. In the early days of music production, compression was primarily used to smooth out the inconsistencies in audio recordings. It was used to even out the levels of an entire performance, making it sound more polished and professional. However, as technology advanced and musicians became more experimental, compression started being used for more creative purposes. Nowadays, compression is not only used to control the dynamics of a recording but also as an intentional effect. Engineers and producers use compression to create unique and distinctive sounds. For example, heavily compressed drums can sound punchy and aggressive, while a gently compressed vocal can sound smooth and intimate. Additionally, compression can be used to shape the sound of individual instruments or to control the overall mix of a song. It can bring out certain elements in a mix, such as enhancing the attack of a guitar or tightening up the bass. In conclusion, compression has come a long way from its origins as a tool for cleaning up audio recordings. It is now an essential tool in modern music production, used both as a technical tool and as a creative effect to shape and enhance a sound. mixes and masteringThe current situation indicates that the substance has now solidified and been taken to its limits. The primary purpose of a compressor is to decrease the gap between the highest and lowest levels of an audio signal. In simple terms, it reduces the volume of the highest points in your tracks, compressing the waveform, and achieving a more balanced sound in the overall mix.

For instance, in your compressor, you select a volume threshold for the sound to occupy. This range prevents the volume from exceeding or falling below the selected level. You have the ability to modify the AttackThe speed of the compressor determines how efficiently it operates, and you have the ability to modify this speed. Additionally, you have the option to adjust the speed on the compressor so that it can perform its tasks more efficiently. Releasepressure switch, which regulates when the compressor turns on and off, plays a significant role in determining the compressor's release rate. Moreover, the pressure switch, which determines the speed at which the compressor releases air, also has a crucial impact. ThresholdThe amount of compression applied can be determined. Compression is widely used by producers, mixing engineers, and mastering engineers on a daily basis for every track, just like EQ. It is an essential effect that plays a crucial role in shaping modern music.

include various controls for adjusting the compression settings. pluginThree terms you might find yourself curious about are Ratio, Peak/RMS, and Knee.

  • RatioThe term "compression ratio" pertains to the degree of compression applied to signals that exceed the specified threshold. It determines the extent to which the compression is activated as the volume surpasses the threshold level.
  • Peak / RMSThe purpose of the mentioned tools is to define the way the compressor reacts to the volume of the trigger signal.
  • KneeThe initiation of compression is dictated by the knee. The compression gradually introduces itself with a soft knee, as opposed to the sudden and sharp nature of a hard knee, resembling a switch being turned on and off.

Exploring Compression: Understanding the Knobs and Terms Initially, all these knobs and terminology might appear perplexing, and the reality is, compression is often subtly nuanced, making it arduous to differentiate the effects of individual knobs. This is precisely why we highly recommend experimenting with a compressor while listening to a reference track that you're familiar with. Turn the knobs all the way in each direction to gain a better understanding of their impact. Even if you never push them to such extreme levels in your own music, it's advantageous to firsthand experience what your compressor is capable of and how each knob contributes to its functionality.

What is Sidechain Compression?

One can best understand side chain compression through analogy. Visualize yourself in a spacious auditorium, filled with a multitude of people engaged in simultaneous conversations. Utilizing side chain compression, it becomes achievable to amplify the sound of an individual amidst the cacophony. For instance, if a singer endeavors to outshine a band, the band's audio can be compressed in a manner that when the singer remains silent during intense sections, their voice will prevail with greater prominence. This aspect of compression has become increasingly prevalent in contemporary music production. Even if you are unfamiliar with the technical term "sidechaining," you have undoubtedly encountered its effects in songs such as "
 This part of compression is becoming ubiquitous in modern production. Even if you don’t know what sidechaining means, you’ve definitely heard it in songs like One More TimeGet Lucky" by Daft Punk, or "Around the World" by Daft Punk, or "One More Time" by Daft Punk Tea Leaf Dancers "by Flying Lotus. The popularity of this technique has skyrocketed due to its rhythmic impact and its effectiveness as a mixing tool. In essence, sidechain compression is an exceptional form of effect wherein the compression level of one audio track is influenced by another audio track."

An illustration of this concept is employing a sidechain compressor on a bass track and directing it towards the output volume of the kick drum. In doing so, as the kick drum is struck, the bass track becomes compressed, thereby allowing more space for the kick drum to integrate harmoniously within the overall blend.

 

The Purpose of Sidechaining: An Exploration into its Meaning.

's, just use the routing system of the mixer to send the signals to different destinations. low-endWhen multiple instruments are present in your track, they may compete for attention and disrupt the balance in your mix. This is why, as demonstrated in the aforementioned example, it is advisable to engage sidechain compression by linking your bass to your kick. If you have a sub-bass that coincides with a powerful kick, the combined impact not only diminishes the kick's impact, but also introduces muddiness due to the overwhelming low-end frequencies. However, utilizing compression on your bass whenever the kick hits creates space for the kick to dominate, preventing excessive crowding of the low-end frequencies, commonly referred to as mud.

Another way that this technique can be utilized is by creating more space in your mix for the vocals. If you are working with a singer who has a gentle voice and/or an intricate instrumental arrangement, it might be worth considering using a compressor on certain instruments that take up a lot of sonic space, and then setting up sidechain compression with your lead vocal. By doing this, whenever your singer is finding it difficult to cut through the busy mix, the compressed sounds will create room for the vocals to truly shine. This concept of adjusting compression to create space can be applied to any sounds that you wish to compress, allowing other elements to occupy the mix more effectively.

In more contemporary music genres like Lo-Fi and Chillstep, sidechain compression is frequently utilized for more than just mixing purposes; it is applied stylistically to introduce rhythmic fluctuations to sounds. For instance, you could apply sidechain compression to an ambient pad, synchronizing it with your kick, transforming a sustained chord into a rhythmic element that adds vitality to your beat. An illustration of this can be found in the song "Teebs" by Teebs. View Pointlatest track. In this track, the unique feature is the presence of an ambient pad that resembles the sound of strings, which creates a "ducking" effect whenever the kick drum is played. When producing Lo-Fi music, artists often utilize a sidechain compressor to achieve this effect on the guitar track. Additionally, a low pass EQ filter is applied to the guitar track. By applying a significant amount of compression to the guitar, it creates the desired "ducking" effect, synchronizing with each kick drum hit. This effect can be clearly heard in Quickly, Quickly's most recent release. track he composed for our Lo-Fi & Chill-wrap="hard">The audio is compressed to create a dense pack of sounds, but they are not actually ducking. The compression heavily reduces their volume, giving the illusion of a quieter sound.

How to Utilize a Sidechain Compressor Utilization of a Sidechain Compressor

Most DAWskick drum track. kick drum 

Once you have chosen the kick drum, you can modify the corresponding knobs to control the amount of compression applied to the bass when the kick strikes. The four main knobs to focus on are the threshold, ratio, attack, and release. By adjusting each knob, you will perceive the variation in compression when the kick impacts.

 

To achieve an extreme level of the effect, you could opt for an excessive ratio, such as 18:1, minuscule attack, a quick release, and drive your threshold further down to approximately -30 dB.

 

Moreover, within Ableton software, there is a convenient feature that allows you to apply a filter to the audio source you are sidechaining. This functionality can be particularly useful when dealing with a drum loop containing multiple elements such as kick, snare, and hi-hat, and you specifically want to route the sidechain compressor to the kick. However, since the kick is intertwined with the snare and hi-hat, it is not possible to isolate it directly. Nonetheless, by utilizing the EQ knob, you can choose a suitable filter that directs the audio signal to a specific frequency of your choice. For example, in this situation, it may be ideal to select a frequency below 200 Hz, where the kick is most prominent and the influence of the snare and hi-hat is minimal. Additionally, you have the ability to fine-tune the Gain and Mix settings, offering even greater flexibility in adjusting the compressor for optimal sidechain results tailored to your specific requirements.

 

Is Sidechain Compression Necessary?

In the majority of situations, if you effectively balance your mix, you won't require excessive sidechain compression. The sole occasions where it could be considered essential is when there are conflicting frequencies between two instruments, such as a booming kick and an 808. There must be space for those low frequencies to coexist, and if they are impacting simultaneously at comparable levels, the entire mix will become muddled, and the kick will lack impact. In a scenario of this nature, implementing sidechain compression will promptly resolve the problem.

pumping" effect can add movement and groove to your tracks. ducking"Having a sensation in music is entirely a matter of personal style. It is not necessary to apply a sidechain compressor to every track and route it to a kick or any specific element. However, if one is aiming to create music in genres like Chillstep or Lo-Fi, the use of this effect would likely be quite common and frequent. In fact, there are no restraints as to what can be sidechained. For instance, it is possible to associate an audio sample of vinyl static with a snare drum and give the vinyl static track its own rhythmic movement. These small applications can significantly enhance the variety in beats."

However, it is important to exercise caution and avoid excessive use. Frequently, simplicity is more effective. There is no need to hear the sound of your track "ducking" in order to determine if you have applied sufficient compression. As long as the mix is polished and the desired outcome is achieved, you can conclude the process. It can become unpleasant if you apply excessive compression to every track, even if it seems thrilling at the time. The secret is to apply precisely the appropriate amount of compression to create a refined and invigorating mix.

Anders Johanson
Anders Johanson



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