Low pass shelving filter2/27/2023 ![]() ![]() However, by their very nature, passive EQs, or filters, have to then have the signal boosted to compensate for the cut. Although they are inflexible, they can perform reduction (cut or attenuation) tasks reasonably well. ![]() By cutting, for example, low frequencies (bass), they make the mid and high frequencies sound ‘louder’. The way they work is actually very much to do with perception. These types of EQs have the distinction of being extremely simple in design and, more importantly, they cannot boost frequencies, only cut. However, I have made sure to include the most common types. There are so many types of equaliser topologies that it would be impossible to list them all here and offer detailed explanations as to how they work. Understanding which equaliser to use for any given task is the first battle in selecting the right equaliser for the task in hand. In music production, we are pretty lucky to have so many tools available to us and in the area of equalisation we are actually spoilt for choice. Active, Passive, Graphic, Parametric, Fixed and Peaking Eqs is a video tutorial that explains the differences between and the various equaliser topologies. ![]()
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