Knee: The ‘Knee' knob marks the point at which the compressor begins to function – it's the transition curve from pre-compression, to compressed audio.Attack & Release: The ‘Attack' dictates how quickly the compressor kicks in, while the ‘Release' shows how it fades out.10dB crossing the threshold will attenuate 5dB. If it crosses more, it will be attenuated on the same ratio. A 2:1 ratio has to cross the threshold by 2dB to be attenuated by 1dB. Ratio – controls the intensity of the compression applied.Slam Pup's ‘Bite' knob is by far the easiest way to understand this function. Beginners can get their hands dirty by moving the large ‘Threshold' dial on the Eareckon FR-Comp 87 with analogue-sounding results. Once it passes the dB level set, your compressor will begin to react to the audio you feed it. Threshold – controls where the compressor begins to add gain reduction.Here's a brief overview of what the controls on a compressor plugin do: What Do All These Knobs On The Compressor Do? However, although many plugins emulate the hardware, you can also get extremely clean compression plugins, such as FabFilter Pro C, which serve as helpful, transparent mixing tools.

will all emulate those hardware circuit types, for example. Most compressor plugins are emulations of their hardware counterparts and reproduce certain circuit types to produce a particular sound or characteristic. This can smooth out large volume changes, add thickness and also add a certain character, depending on the circuit style of the compressor. Compressor VSTs squash the loudest and softest parts of an audio signal, pushing them closer together, and reducing the dynamic range of your audio.

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