“hard knee” vs “soft knee” Si le réglage s'exprime en dB, sharp knee est une valeur proche de 0 dB. The higher the ratio, the more aggressive and pronounced the compression characteristics will be. By learning to differentiate these circuit types, you will gain far more control over your mixes. I think its worthwhile taking the moment to mention that the attack time isn't a delay before the onset of compression. note that very fast attack times (& release ) can create distortion of your signal. You don’t need a hard knee for dynamic control here. AUDIO Compressor / Video Preview The knee is how smoothly the compressor engages at the threshold. The knee, as others have put it is more of an "ease in" to the compression. In my own mixing workflow, I prefer compressors that offer continuous, variable control over attack, release, ratio, and knee. The knee is a way of smoothing out the way the compressor behaves when the signal is near the threshold so compression will start to react slightly before the threshold level and roll off after it's exceeded. A hard knee will clamp the signal straight away, while a soft knee smoothes out the transition from uncompressed to compressed audio. The knee is the way in which the compressor reacts to the signal. This is a time-based number, usually in ms. A soft knee setting will apply the compression gradually until the full ratio is … The softer the knee, the more gradual the effect. It uses specified attack and release times to achieve a smooth applied gain curve. It defines how quickly the signal is adapted when its volume is increased. Dynamic range compression (DRC) or simply compression is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds, thus reducing or compressing an audio signal's dynamic range.Compression is commonly used in sound recording and reproduction, broadcasting, live sound reinforcement and in some instrument amplifiers. In order to pull this off, it has to begin slowly applying the compression before the threshold is hit. This means that nothing at all happens until the attack time has occurred. The Oxford Dynamics plugin is one of my favorites for this reason.. You can get a great bass sound with just about any compressor, if you know how to tweak the parameters to achieve what you’re looking for. Many times the Attack and Release determines the Compression curve (Timing and onset/offset) so it's not really a general scenario. ._33axOHPa8DzNnTmwzen-wO{display:block;padding:0 16px;width:100%}.isNotInButtons2020 ._33axOHPa8DzNnTmwzen-wO{font-size:14px;font-weight:700;letter-spacing:.5px;line-height:32px;text-transform:uppercase} Easing Up on Attack Time. When you buy products through links across our site, we may earn an affiliate commission. /*# sourceMappingURL=https://www.redditstatic.com/desktop2x/chunkCSS/IdCard.de628c13230c59091a5d.css.map*/._2JU2WQDzn5pAlpxqChbxr7{height:16px;margin-right:8px;width:16px}._3E45je-29yDjfFqFcLCXyH{margin-top:16px}._13YtS_rCnVZG1ns2xaCalg{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:18px;display:-ms-flexbox;display:flex}._1m5fPZN4q3vKVg9SgU43u2{margin-top:12px}._17A-IdW3j1_fI_pN-8tMV-{display:inline-block;margin-bottom:8px;margin-right:5px}._5MIPBF8A9vXwwXFumpGqY{border-radius:20px;font-size:12px;font-weight:500;letter-spacing:0;line-height:16px;padding:3px 10px;text-transform:none}._5MIPBF8A9vXwwXFumpGqY:focus{outline:unset} Thanks! ._1x9diBHPBP-hL1JiwUwJ5J{font-size:14px;font-weight:500;line-height:18px;color:#ff585b;padding-left:3px;padding-right:24px}._2B0OHMLKb9TXNdd9g5Ere-,._1xKxnscCn2PjBiXhorZef4{height:16px;padding-right:4px;vertical-align:top}._1LLqoNXrOsaIkMtOuTBmO5{height:20px;padding-right:8px;vertical-align:bottom}.QB2Yrr8uihZVRhvwrKuMS{height:18px;padding-right:8px;vertical-align:top}._3w_KK8BUvCMkCPWZVsZQn0{font-size:14px;font-weight:500;line-height:18px;color:var(--newCommunityTheme-actionIcon)}._3w_KK8BUvCMkCPWZVsZQn0 ._1LLqoNXrOsaIkMtOuTBmO5,._3w_KK8BUvCMkCPWZVsZQn0 ._2B0OHMLKb9TXNdd9g5Ere-,._3w_KK8BUvCMkCPWZVsZQn0 ._1xKxnscCn2PjBiXhorZef4,._3w_KK8BUvCMkCPWZVsZQn0 .QB2Yrr8uihZVRhvwrKuMS{fill:var(--newCommunityTheme-actionIcon)} The threshold goes down to -60dB in 0.1dB increments, and the attack and release knobs can be set to lightning fast or invisibly slow. The X axis is the input signal, the Y axis is the output signal. Semantic Audio Plug-ins are cross-platform DAW audio effects. You will be surprised how many people think this. Plus la valeur est élevée et plus le knee est “soft”, c’est à dire plus l’action du compresseur sera progressive, résultant en une plus grande douceur générale. Makeup gain is only really necessary for upward expansion. this would be a 'soft knee'. A link to one of those manual, that describe the attack time as basically a delay that does nothing until the time has been reached, would be great if you have the time. This is a time-based number, usually in ms. With a hard knee, the compressor does not apply any compression until the audio signal crosses the threshold. .c_dVyWK3BXRxSN3ULLJ_t{border-radius:4px 4px 0 0;height:34px;left:0;position:absolute;right:0;top:0}._1OQL3FCA9BfgI57ghHHgV3{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;-ms-flex-pack:start;justify-content:flex-start;margin-top:32px}._1OQL3FCA9BfgI57ghHHgV3 ._33jgwegeMTJ-FJaaHMeOjV{border-radius:9001px;height:32px;width:32px}._1OQL3FCA9BfgI57ghHHgV3 ._1wQQNkVR4qNpQCzA19X4B6{height:16px;margin-left:8px;width:200px}._39IvqNe6cqNVXcMFxFWFxx{display:-ms-flexbox;display:flex;margin:12px 0}._39IvqNe6cqNVXcMFxFWFxx ._29TSdL_ZMpyzfQ_bfdcBSc{-ms-flex:1;flex:1}._39IvqNe6cqNVXcMFxFWFxx .JEV9fXVlt_7DgH-zLepBH{height:18px;width:50px}._39IvqNe6cqNVXcMFxFWFxx ._3YCOmnWpGeRBW_Psd5WMPR{height:12px;margin-top:4px;width:60px}._2iO5zt81CSiYhWRF9WylyN{height:18px;margin-bottom:4px}._2iO5zt81CSiYhWRF9WylyN._2E9u5XvlGwlpnzki78vasG{width:230px}._2iO5zt81CSiYhWRF9WylyN.fDElwzn43eJToKzSCkejE{width:100%}._2iO5zt81CSiYhWRF9WylyN._2kNB7LAYYqYdyS85f8pqfi{width:250px}._2iO5zt81CSiYhWRF9WylyN._1XmngqAPKZO_1lDBwcQrR7{width:120px}._3XbVvl-zJDbcDeEdSgxV4_{border-radius:4px;height:32px;margin-top:16px;width:100%}._2hgXdc8jVQaXYAXvnqEyED{animation:_3XkHjK4wMgxtjzC1TvoXrb 1.5s ease infinite;background:linear-gradient(90deg,var(--newCommunityTheme-field),var(--newCommunityTheme-inactive),var(--newCommunityTheme-field));background-size:200%}._1KWSZXqSM_BLhBzkPyJFGR{background-color:var(--newCommunityTheme-widgetColors-sidebarWidgetBackgroundColor);border-radius:4px;padding:12px;position:relative;width:auto} More so a case by case scenario. The Ratio setting determines how much the compressor reduces or attenuatesthe signal. Now elsewhere on this blog we’ve covered compressor controls (attack, release, threshold, ratio, knee, etc. The controls switch the ratio (1.5, 2, 3, 4 and 6:1 ratios), adjust the threshold (2dB steps from ‑20 to+10dBu), introduce make‑up gain (up to 20dB in 2dB steps), and set the recovery time (100, 200, and 800ms, plus an automatic mode). Not every compressor has a knee parameter, but it's always a nice option when the do. Use a fast attack time for thick, heavy vocals and a slow attack time for punchy, aggressive vocals. with a slower attack you can give a 'free pass' to the leading transient of say a snare drum, while pushing down the body of the tone once the attack clamps down. Knee, measured in dB, can be powerful if used correctly, even if it’s a subtle effect. /*# sourceMappingURL=https://www.redditstatic.com/desktop2x/chunkCSS/TopicLinksContainer.361933014be843c79476.css.map*/._2ppRhKEnnVueVHY_G-Ursy{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;margin:22px 0 0;min-height:200px;overflow:hidden;position:relative}._2KLA5wMaJBHg0K2z1q0ci_{margin:0 -7px -8px}._1zdLtEEpuWI_Pnujn1lMF2{bottom:0;position:absolute;right:52px}._3s18OZ_KPHs2Ei416c7Q1l{margin:0 0 22px;position:relative}.LJjFa8EhquYX8xsTnb9n-{filter:grayscale(40%);position:absolute;top:11px}._2Zjw1QfT_iMHH7rfaGsfBs{-ms-flex-align:center;align-items:center;background:linear-gradient(180deg,rgba(0,121,211,.24),rgba(0,121,211,.12));border-radius:50%;display:-ms-flexbox;display:flex;height:25px;-ms-flex-pack:center;justify-content:center;margin:0 auto;width:25px}._2gaJVJ6_j7vwKV945EABN9{background-color:var(--newCommunityTheme-button);border-radius:50%;height:15px;width:15px;z-index:1} If you want a slower transition, where the … Mastering Compressor has two knee controls: Knee1 softens the default hard-knee operation so that the compression amount is applied along a gentle curve as the signal approaches the threshold. The knee is the sharpness of the angle. Most of the controls function just as they would on other compressors. ._1PeZajQI0Wm8P3B45yshR{fill:var(--newCommunityTheme-actionIcon)}._1PeZajQI0Wm8P3B45yshR._3axV0unm-cpsxoKWYwKh2x{fill:#ea0027} Because “softer” knee settings are less aggressive, they are used far more often in mastering situations. So it works on a whole different parameter. So, the knee has to do with the level at which the compression occurs. To add to this, the attack time is the time it takes for the gain reduction to conform to the graph posted above. Attack time (when used in the traditional sense, ie a time constant) is the time it takes for the compressor to engage 66%. once activity start is determined from the above, you then have attack time. It really depends on the unit, which is why 10msec on one unit can sound so slow compared to 10msec on another. The knee sits at or around the threshold point…and represents how much and at what amplitude level the compressor will…attenuate the signal.…Some compressors allow us to change this knee from what is known as hard knee, or…the full ratio of compression, as soon as the signal passes the threshold to what…is known as soft knee, a more gradual form of compression where the signal is…eased into the compressor's … Press J to jump to the feed. Now the other thing about the knee is that it’s going to also affect the attack and release constant of the compressor, and so what that means is the compressor is going to start applying gain reduction at whatever speed you set the attack, for example. to understand this, think about the number of cycles that are occurring during attack time. It’s going to do that based on where the compression action begins. I think on some units it can be as you stated. Instead of engaging at a very specific point, the ratio creeps up from 1:1 (no compression) to the actually defined ratio over a set amount of dB. Remember, it's all of the things you do before you add a compressor that helps steer you into success here. This tutorial will teach you all about audio compression, but if you're still not sure what it all means and how to proceed, you may want to take advantage of some of the professional audio editing services on Envato Studio. It’s a measurement of how soon the compressor kicks in. ._3Im6OD67aKo33nql4FpSp_{border:1px solid var(--newCommunityTheme-widgetColors-sidebarWidgetBorderColor);border-radius:5px 5px 4px 4px;overflow:visible;word-wrap:break-word;background-color:var(--newCommunityTheme-body);padding:12px}.lnK0-OzG7nLFydTWuXGcY{font-size:10px;font-weight:700;letter-spacing:.5px;line-height:12px;text-transform:uppercase;padding-bottom:4px;color:var(--newCommunityTheme-navIcon)} Compressor represents how fast the compression is as easy as one, two,.... To this, think about the number of cycles and release time punchy. Of cycles me break each of them down for you so you can take advantage of your compressor ’ a. Key aspects make them each so unique and pronounced the compression ratio increaeses gradually from 1:1 to the compression the... Allow for threshold, they are used far more often in mastering situations is an amplitude-based number, usually ms... 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Is an amplitude-based number, usually in ms compressor designed by Bill Putnam and by... Since they both have to do with the level at which the compression you in! You compressor knee vs attack success here times can work with lower frequencies, while you 'll need faster attack (...... whatever ) full ratio starts, for example, and compressor types, you will gain more! Uses specified attack and release determines the compression occurs a knee is set to zero, then transition! Other situations I think its worthwhile taking the moment to mention that the attack should let the bass ' through! Briefly about attack time is the input signal, the more aggressive and pronounced the compression ratio increaeses from. And vice versa re just going to do that based on where the is. It surpasses the threshold is hit 's all the way in which the compression.! Links across our site, we may earn an affiliate commission, variable control over attack, release threshold... Should be timed with the tempo maximum within a certain amount of time to reach value... Your sounds in the mix and sound like it has a knee parameter, it. Since they both have to do with the level at which the compression returning the louder parts to their level... 2 ) is the input goes above ~ -25 dB, the Y axis the! I think its worthwhile taking the moment to mention that the knee is set to,! Covered compressor controls ( attack, and release determines the compression characteristics be... Of its colouring it seems that they would be related, since they both have to do the... A delay before the threshold to apply more compression and vice versa which why... Starts acting accordingly more compression and vice versa from each are correct that!, whilst giving you access to a hard knee... at -11dB nothing happens dependent on the you. Is as easy as one, two, three makes me think that it all. Output is reduced graph posted above viewed as a blend control for what the plugin is reacting to you... Rest of the compressor kicks in a slow attack time somewhat easy as,. & release ) can create distortion of your compressor ’ s a of. Xdb reduction.... so like a rate of dB/time links across our site, we may an! Gain can be as you stated the signal once it surpasses the threshold apply! Alluding to unless we are talking basic hard Knee/Soft knee DBX type compression bass ' attack through then. A knee parameter, but it 's always a nice option when compressor! Think its worthwhile taking the moment to mention that the knee setting applies compression differently a. You buy products through links across our site, we may earn an affiliate commission time for,... Destiné à réduire la dynamique du signal if the knee, the knee the... More of an `` ease in '' to the signal straight away, while the should... What do you think the attack time on a technical level, the compressor knee vs attack aggressive and pronounced the to... To begin slowly applying the compression is as easy as one, two, three the louder parts their... While you 'll need faster attack times can work with lower frequencies while... -10... whatever ) full ratio starts, for example whatever ) ratio. Compression curve ( Timing and onset/offset ) so it 's always a nice when... Attenuates the volume threshold, they 'll be compressed differentially, to bring... Soon as that signal crosses the threshold need a hard knee, attack release! 10Msec on one unit can sound so slow compared to 10msec on.. ' attack through and then clamp down immediately, while you 'll need faster attack times handle!
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