A graphic equalizer is an audio processing tool that allows users to adjust the balance of different frequency ranges in sound. It typically features a series of sliders, each representing a specific frequency band, which can be raised or lowered to enhance or reduce certain sounds. This helps in tailoring audio output to suit personal preferences or to improve sound quality in various environments. Graphic equalizers are commonly used in music production, live sound reinforcement, and home audio systems. By manipulating frequencies, users can address issues like muddiness or harshness in audio, making it clearer and more enjoyable. They are essential tools for sound engineers and audiophiles alike.