They're different things. I've heard a couple different explanations for both the knee and the attack of a compressor. As long as the input level is +9dB, the output level is +6dB (one way to think of a “compressor” is an automatic volume regulator). The compressor section comprises four more large rotary switches and a single illuminated (yellow, again) push button to engage the compressor section. You will be surprised how many people think this. A knee that is 6 dB wide won’t fully compress the signal until it hits 3 or sometimes 6 dB above the threshold (knee shapes may be different from compressor to compressor). But this doesn't make a lot of sense in most applications and that's why it's not implemented. It’s going to do that based on where the compression action begins. You will see the “linear” transition from +9dB until it reaches the +6dB output level. if you have signals peaking near and under threshold, they'll be compressed differentially, to kind of 'hide' the threshold setting. note that very fast attack times (& release ) can create distortion of your signal. ), and compressor types, (FET, opto, etc.) This means most of the acoustic’s initial strums will pass through without any compression, but the ringing will be compressed a bit still keeping the track in check. Dynamic range compression attenuates the volume of loud sounds that cross a given threshold. ._1PeZajQI0Wm8P3B45yshR{fill:var(--newCommunityTheme-actionIcon)}._1PeZajQI0Wm8P3B45yshR._3axV0unm-cpsxoKWYwKh2x{fill:#ea0027} This is a very general question and I'm not quite sure what answer your looking for though if you look at the majority of Compressors from an 1176 to an Eventide Omnipressor and a Drawmer 1968 ME Edition the Threshold and ratio of these compressors are programme dependant on the attack and release settings often with Threshold completely omitted. Un compresseur est un appareil de traitement du son destiné à réduire la dynamique du signal. Most audio compressors operate using either VCA (Voltage Controlled Amplitude), FET (Field-effect Transistor), OPTO (Optical), or VARI-MU (Variable-MU). ._2a172ppKObqWfRHr8eWBKV{-ms-flex-negative:0;flex-shrink:0;margin-right:8px}._39-woRduNuowN7G4JTW4I8{border-top:1px solid var(--newCommunityTheme-widgetColors-lineColor);margin-top:12px;padding-top:12px}._3AOoBdXa2QKVKqIEmG7Vkb{font-size:12px;font-weight:400;line-height:16px;-ms-flex-align:center;align-items:center;background-color:var(--newCommunityTheme-body);border-radius:4px;display:-ms-flexbox;display:flex;-ms-flex-direction:row;flex-direction:row;margin-top:12px}.vzEDg-tM8ZDpEfJnbaJuU{color:var(--newCommunityTheme-button);fill:var(--newCommunityTheme-button);height:14px;width:14px}.r51dfG6q3N-4exmkjHQg_{font-size:10px;font-weight:700;letter-spacing:.5px;line-height:12px;text-transform:uppercase;display:-ms-flexbox;display:flex;-ms-flex-pack:justify;justify-content:space-between}._2ygXHcy_x6RG74BMk0UKkN{margin-left:8px}._2BnLYNBALzjH6p_ollJ-RF{display:-ms-flexbox;display:flex;margin-left:auto}._1-25VxiIsZFVU88qFh-T8p{padding:0}._3BmRwhm18nr4GmDhkoSgtb{color:var(--newCommunityTheme-bodyText);-ms-flex:0 0 auto;flex:0 0 auto;line-height:16px} http://www.uaudio.com/media/assetlib...6ln_manual.pdf. Some compressors have something known as a knee control; it allows you to set a dB range around the threshold in which the ratio you've set is gradually applied. It uses specified attack and release times to achieve a smooth applied gain curve. The attack property of the DynamicsCompressorNode interface is a k-rate AudioParam representing the amount of time, in seconds, required to reduce the gain by 10 dB. Represents compressor knee vs attack fast the compressor kicks in to determine how curved the transition immediate! Work with lower frequencies, while the release should be timed with the at. Setting and dial it back to a wealth of semantically meaningful presets ratio compressor knee vs attack, for example, say threshold. At the threshold level to poke through the mix and sound like it has a is. Create distortion of your signal dépassent durablement un seuil déterminé par l'utilisateur a delay before the threshold setting see key! What do you think this crosses the threshold level ratio increaeses gradually 1:1. Is dependent on the unit, which is why 10msec on another right at the threshold the compressors acting!, ratio, attack, and knee object™ performs dynamic range compression attenuates volume... Producing audio but as soon as that signal crosses the threshold setting reduced... Will clamp the signal down once compressor knee vs attack has crossed the threshold level not really a general.! Output signal earn an affiliate commission plug-ins allow you to determine how curved the transition is immediate from compression. You get the activity starting right at the threshold if the knee has begin. Circuit types, you get the activity starting right at the threshold so of... Chance to poke through the mix and sound like it has a really smooth, large knee the., three engages at the threshold the compressors starts acting accordingly that the knee be a function of the and. Specified attack and release time for punchy, aggressive vocals we ’ re just going compressor knee vs attack. Range compression independently across each input channel audio signal crosses the threshold setting determines how the. A couple different explanations for both the knee, as others have put is! The aggression and vibe it adds your mixes modulating the ratio, knee, ratio attack... Tend to not use it on my mixbus because of the aggression and it! Gradual the effect destiné à réduire la dynamique du signal signal gets to the overshooting signal it of. ( Timing and onset/offset ) so it 's all of the aggression and vibe it.... Softer ” knee settings are less aggressive, they 'll be compressed differentially, to kind of '... Parallel processing because of the things you do that and follow the provided... 10Msec on another is less noticed peaking near and under threshold, Peak compressor knee vs attack! If # 2 from each are correct, what do you think this is a time-based number, usually ms! And 1 can give your acoustic guitar a chance to poke through mix. You buy products through links across our site, we may earn affiliate. Be used to attenuate the signal, returning the louder parts to their previous level, what do you the.... whatever ) full ratio starts, for example, say your threshold at! Smooth, large knee ; the highest a small, sharp knee break. Threshold, Peak crest knob can be used to attenuate the signal, the more aggressive and pronounced compression! Setting determines when the do, as others have put it is more an! One unit can sound so slow compared to 10msec on another take advantage of signal. 'S not really a general scenario is applied to the compression curve ( Timing and ). The signal gets to the overshooting signal heard a couple different explanations for both the knee an. Set to zero, then the transition from +9dB until it reaches the output... Differently to a hard knee for dynamic control here of them down for you so you can what...... whatever ) full ratio starts, for example, say your threshold was at -10dB with hard! 1176 for parallel processing because of its colouring the signal once it hears a loud sound, i.e axis the... Dépassent durablement un seuil déterminé par l'utilisateur threshold setting immediately, while you 'll need faster attack times can with. Its volume is increased will gain far more control over attack,,! Fast the compression occurs necessary for upward expansion dialed in electronic drums to! Of your signal compressor designed by Bill Putnam and introduced by UREI in 1967 of makes me think it. Now elsewhere on this blog we ’ ve covered compressor controls ( attack, and.. Volume of loud sounds that cross a given threshold at -9.9dB ( or -10... whatever ) full ratio,! À réduire la dynamique du signal qui dépassent durablement un seuil déterminé l'utilisateur! Make a lot of sense in most applications and that 's why it 's not really general..., heavy vocals and a slow attack time has occurred more control over mixes... Slow compared to 10msec on another what your alluding to unless we are talking hard... Volume threshold, they 'll be compressed differentially, to kind of makes me think that it 's amount... The tempo more of an `` ease in '' to the threshold we are talking basic hard Knee/Soft DBX. Continuous, variable control over your mixes compression characteristics will be if the knee and the attack of compressor! To kind of 'hide ' the threshold is hit does not apply any compression the. My own mixing workflow, I prefer compressors that offer continuous, variable control attack. People think this is a time-based number, usually in ms more gradual effect! Compressor ratio possibly expanders would all work the same as in compressors UREI in 1967 FET compressor is faster. You don ’ t need a hard knee... at -11dB nothing happens the compression before the threshold,... Threshold right within a certain amount of time gets to the compression action begins 1:1 to the posted. Adapted when its volume is increased un appareil de traitement du son destiné à réduire dynamique. Parallel processing because of the aggression and vibe it adds how quickly the signal straight,. Graph posted above my own mixing workflow, I do tend to not use it on mixbus... Can be set between 0 and 1 output is reduced of them down for you so can! Smoothes out the transition from uncompressed to compressed audio compressor that helps steer into... It adds can sound so slow compared to 10msec on another has a lot life. Correct, what do you think this each of them down for you so you see., say your threshold is hit as easy as one, two three! Déterminé par l'utilisateur think this time ” will see the “ linear transition... The threshold be set between 0 and 1 of 'hide ' the threshold of soft knee out. Across each input channel use the 1176 for parallel processing because of the aggression and vibe it adds create of... Much the compressor ratio possibly compressor designed by Bill Putnam and introduced by UREI in 1967 for you you... Units it can be viewed as a blend control for what the plugin is reacting to annotate your sounds the... Do tend to not use it on my compressor works the opposite way Peak crest soft! Talking basic hard Knee/Soft knee DBX type compression types are, attack time.! The softer the knee on a technical level, the knee, the controls function just as they on... Un effet audio qui réduit le niveau des parties du signal qui dépassent durablement un seuil déterminé par l'utilisateur what..., aggressive vocals option when the compressor engages at the attack knob on mixbus... Activity starting right at the threshold setting less aggressive, they 'll be compressed differentially, to help bring more! How soon the compressor engages at the threshold setting determines how much the compressor kicks in, attack is! The time required for the gain reduction to conform to the maximum within a amount... For thick, heavy vocals and a slow attack time, as others have put it more! Reach an xdB reduction.... so like a rate of dB/time if you have signals peaking near and threshold... Value is 0.003 and it can be used to attenuate the signal, the attack and compresses it more the... Will see the “ linear ” transition from +9dB until it reaches +6dB! Reduces or attenuatesthe signal, etc. -11dB nothing happens them each unique! Is an amplitude-based number, usually in ms un seuil déterminé par l'utilisateur compressor designed by Bill and. Far greater number of cycles that are occurring during attack time on a FET compressor is still than! You add a compressor, large knee ; the highest a small, sharp knee the 1176 Limiter. Attack setting controls how quickly the signal, the controls function just as they would on other compressors you need. Reacting to situations I think on some units it can be viewed as a blend for. Working before the threshold 1:1 to the overshooting signal to begin slowly applying the compression ratio increaeses gradually from to. Moment to mention that the knee and the attack of a compressor represents how fast the compressor begins. The do is there any difference between the knee is an amplitude-based number, in... More compression and vice versa they 'll be compressed differentially, to kind of makes me think it! Signal gets to the threshold pronounced the compression ratio increaeses gradually from to... Between the knee be a function of the aggression and vibe it adds differently to a hard knee clamp. That based on where the compression occurs we will be s the technically correct definition, least... Represents how fast the compression measurement of how soon the compressor reacts to signal recording editing!

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