Simple Explanation

The specific frequency that an EQ band or filter is focused on.

Concise Technical Definition

The frequency at the peak (or dip) of a bandpass or notch filter’s response curve; it defines the central point where maximum boost or cut occurs.

Layman-Friendly Analogy

Like tuning a radio to your favorite station—the center frequency is the exact point you want to listen to or change.

Industry Usage Summary

Used in graphic and parametric equalizers, filters, and crossover networks to target or shape audio at specific frequencies. Graphic EQs use fixed center frequencies; parametric EQs allow adjustable ones, critical for precision in sound reinforcement, mixing, and acoustical correction.

Engineering Shortcut

Center freq = peak/dip of EQ band; defines where boost/cut is strongest.

Full Technical Explanation

The center frequency is the point of maximum effect in a bandpass, notch, or peak filter, typically measured in hertz (Hz). For bandpass filters, it’s the frequency between the upper and lower -3 dB points. In equalization, it determines where the filter applies gain changes. It is a core parameter in audio processing and system tuning for isolating or emphasizing specific frequency regions.