Equalizer

A 3-band equalizer (EQ) is a device that allows the user to adjust the level of specific frequency ranges within an audio signal. It typically consists of three separate frequency bands, with controls that allow the user to boost or cut the level of each band. The low frequency band is responsible for adjusting the bass frequencies, the mid frequency band adjusts the midrange, and the high frequency band adjusts the treble. Using an EQ, it is possible to shape the tonal characteristics of an audio signal by boosting or cutting specific frequency ranges. This can be useful for a variety of purposes, including correcting for imbalances in the frequency response of a system, or sculpting the tone of an instrument or vocal.