Cutoff frequency
= Cutoff frequency
{wiki=Cutoff_frequency}
The cutoff frequency, often denoted as \\( f_c \\), is a fundamental parameter in the field of signal processing and filter design. It refers to the frequency at which the output of a filter or a system begins to attenuate significantly compared to its response at lower frequencies. Typically, it marks the boundary between passband and stopband in a filter.