A low-shelf is used to boost or attenuate the frequency spectrum’s low end. You can see this in the following examples. Here, the low end of the frequency spectrum is being boost… See more

A high-shelf is used to create a boost or attenuation in the frequency spectrum’s high end. Here, the high end of the frequency spectrum is being attenuated: See more

Shelving filters have three main controls. They are the filter’s gain setting, its frequency setting, and the steepness of its slope. Let’s look at each control in more detail… See more

The frequency setting defines the point at which frequencies above (high shelf) or frequencies below (low shelf) are cut or boosted. Depending on your filter’s design, this frequen… See more