what is eq in sound
PEQ vs Graphic EQ. One of the confusing things for many people new to DSP equalization (EQ) is the choice between graphic and parametric EQ. In this application note, we explain the difference so you can choose which suits your application best. In a parametric equalizer, each filter cuts or boosts a range of frequencies.
An audio equalizer is typically found in home and car stereo systems and is used to alter or control the frequency response characteristics of an audio system. An audio equalizer provides more accurate control of tone or frequency than simple bass and treble controls.