Think of it as sort of dialing in the compression rather than just turning it on an off based on the threshold, attack time, and ratio. It’s going to do that based on where the compression action begins. Then you can take advantage of your compressor’s attack setting and dial it back to a slower attack. Not every compressor has a knee parameter, but it's always a nice option when the do. Messages 10,970. This can give your acoustic guitar a chance to poke through the mix and sound like it has a lot of life. Attack time (when used in the traditional sense, ie a time constant) is the time it takes for the compressor to engage 66%. Lower the threshold to apply more compression and vice versa. The attack property's default value is 0.003 and it can be set between 0 and 1. AUDIO Compressor / Video Preview Like a gain reduction ramp that affects the initial threshold signal at a slightly lesser ratio then depending on the knee setting moves into the normal ratio? So, the knee has to do with the level at which the compression occurs. If it's all the way counterclockwise it chokes the attack and compresses it more. .s5ap8yh1b4ZfwxvHizW3f{color:var(--newCommunityTheme-metaText);padding-top:5px}.s5ap8yh1b4ZfwxvHizW3f._19JhaP1slDQqu2XgT3vVS0{color:#ea0027} Attack time is how fast the compressor kicks in once it hears a loud sound, i.e. That’s the technically correct definition, at least. By learning to differentiate these circuit types, you will gain far more control over your mixes. Say your threshold is -18dB and your ratio is 4:1. It really depends on the unit, which is why 10msec on one unit can sound so slow compared to 10msec on another. Let's say you set a knee with a value of 10dB (which is considered soft), and your ratio is set to 4:1. It seems that they would be related, since they both have to do with the point at which the compression occurs. C'est un effet audio qui réduit le niveau des parties du signal qui dépassent durablement un seuil déterminé par l'utilisateur. Press question mark to learn the rest of the keyboard shortcuts, https://media.uaudio.com/blog/2009/april/doctors_6.jpg. Many engineers use the 1176 for parallel processing because of the aggression and vibe it adds. ._1zyZUfB30L-DDI98CCLJlQ{border:1px solid transparent;display:block;padding:0 16px;width:100%;border:1px solid var(--newCommunityTheme-body);border-radius:4px;box-sizing:border-box}._1zyZUfB30L-DDI98CCLJlQ:hover{background-color:var(--newCommunityTheme-primaryButtonTintedEighty)}._1zyZUfB30L-DDI98CCLJlQ._2FebEA49ReODemDlwzYHSR,._1zyZUfB30L-DDI98CCLJlQ:active,._1zyZUfB30L-DDI98CCLJlQ:hover{color:var(--newCommunityTheme-bodyText);fill:var(--newCommunityTheme-bodyText)}._1zyZUfB30L-DDI98CCLJlQ._2FebEA49ReODemDlwzYHSR,._1zyZUfB30L-DDI98CCLJlQ:active{background-color:var(--newCommunityTheme-primaryButtonShadedEighty)}._1zyZUfB30L-DDI98CCLJlQ:disabled,._1zyZUfB30L-DDI98CCLJlQ[data-disabled],._1zyZUfB30L-DDI98CCLJlQ[disabled]{background-color:var(--newCommunityTheme-primaryButtonTintedFifty);color:rgba(var(--newCommunityTheme-bodyText),.5);fill:rgba(var(--newCommunityTheme-bodyText),.5);cursor:not-allowed}._1zyZUfB30L-DDI98CCLJlQ:active,._1zyZUfB30L-DDI98CCLJlQ:disabled,._1zyZUfB30L-DDI98CCLJlQ:hover,._1zyZUfB30L-DDI98CCLJlQ[data-disabled],._1zyZUfB30L-DDI98CCLJlQ[disabled]{border:1px solid var(--newCommunityTheme-body)}._1O2i-ToERP3a0i4GSL0QwU,._1uBzAtenMgErKev3G7oXru{display:block;fill:var(--newCommunityTheme-body);height:22px;width:22px}._1O2i-ToERP3a0i4GSL0QwU._2ilDLNSvkCHD3Cs9duy9Q_,._1uBzAtenMgErKev3G7oXru._2ilDLNSvkCHD3Cs9duy9Q_{height:14px;width:14px}._2kBlhw4LJXNnk73IJcwWsT,._1kRJoT0CagEmHsFjl2VT4R{height:24px;padding:0;width:24px}._2kBlhw4LJXNnk73IJcwWsT._2ilDLNSvkCHD3Cs9duy9Q_,._1kRJoT0CagEmHsFjl2VT4R._2ilDLNSvkCHD3Cs9duy9Q_{height:14px;width:14px}._3VgTjAJVNNV7jzlnwY-OFY{font-size:14px;line-height:32px;padding:0 16px}._3VgTjAJVNNV7jzlnwY-OFY,._3VgTjAJVNNV7jzlnwY-OFY._2ilDLNSvkCHD3Cs9duy9Q_{font-weight:700;letter-spacing:.5px;text-transform:uppercase}._3VgTjAJVNNV7jzlnwY-OFY._2ilDLNSvkCHD3Cs9duy9Q_{font-size:12px;line-height:24px;padding:4px 9px 2px;width:100%}._2QmHYFeMADTpuXJtd36LQs{font-size:14px;line-height:32px;padding:0 16px}._2QmHYFeMADTpuXJtd36LQs,._2QmHYFeMADTpuXJtd36LQs._2ilDLNSvkCHD3Cs9duy9Q_{font-weight:700;letter-spacing:.5px;text-transform:uppercase}._2QmHYFeMADTpuXJtd36LQs._2ilDLNSvkCHD3Cs9duy9Q_{font-size:12px;line-height:24px;padding:4px 9px 2px;width:100%}._2QmHYFeMADTpuXJtd36LQs:hover ._31L3r0EWsU0weoMZvEJcUA{display:none}._2QmHYFeMADTpuXJtd36LQs ._31L3r0EWsU0weoMZvEJcUA,._2QmHYFeMADTpuXJtd36LQs:hover ._11Zy7Yp4S1ZArNqhUQ0jZW{display:block}._2QmHYFeMADTpuXJtd36LQs ._11Zy7Yp4S1ZArNqhUQ0jZW{display:none}._2CLbCoThTVSANDpeJGlI6a{width:100%}._2CLbCoThTVSANDpeJGlI6a:hover ._31L3r0EWsU0weoMZvEJcUA{display:none}._2CLbCoThTVSANDpeJGlI6a ._31L3r0EWsU0weoMZvEJcUA,._2CLbCoThTVSANDpeJGlI6a:hover ._11Zy7Yp4S1ZArNqhUQ0jZW{display:block}._2CLbCoThTVSANDpeJGlI6a ._11Zy7Yp4S1ZArNqhUQ0jZW{display:none} ._3-SW6hQX6gXK9G4FM74obr{display:inline-block;vertical-align:text-bottom;width:16px;height:16px;font-size:16px;line-height:16px} 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. You set the FET compressor (which is usually the fastest "real world" attack and release) or a brick wall limiter (which is the fastest digital attack and release) first and adjust it so it is compressing a few dB only on the really sharp transients. The softer the knee, the more gradual the effect. Press J to jump to the feed. It’s a measurement of how soon the compressor kicks in. From idealized diagrams of soft knee it's like #2. .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} In other situations I think that it's an amount of time to reach an xdB reduction....so like a rate of dB/time. 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