Graphic Equalizer
Last Edited: Dec 23, 2023
What Is a Graphic Equalizer
Graphic equalizers are one of the simplest types of equalizers available. They usually consist of multiple graphical sliders and other controls that producers use to alter and control an audio system's frequency response. Graphic equalizers mainly boost or cut the frequencies of the sound signal. Additionally, they help in shaping the audio output and making the best use of the digital music library and speaker setup of specific audio systems.
How Does It Work?
The technology behind graphic equalizer works like a series of filters. The input signal passes through each filter of a particular frequency, and when one changes the slider positions, it boosts or cuts the signal's frequency components. The vertical position of each slider denotes the gain applied at the frequency band. Therefore, the knobs look like a graph depicting the equalizer's response concerning its frequency.
Frequency Bands
The number of controls in a graphic equalizer depends on the fixed frequencies it works on. In addition, the number of frequency channels of the equalizer depends upon its intended use. Consequently, a typical five-band graphic equalizer has sliders for five fixed frequency bands:
- Low bass (30 Hz)
- Low-bass (100 Hz)
- Midrange (1 kHz)
- Upper Midrange (10 kHz)
- Treble (20 kHz)
Reducing Resonant Peaks
Graphic equalization reduces the effect of resonant peaks and dips in loudspeaker response. Furthermore, in an acoustic environment, it reduces the tendency of acoustic feedback to occur. As the sound system's overall gain (volume) is turned up, feedback will first happen at the frequency (or frequencies) where the system peaks. It typically begins with a slight ringing and becomes a loud howl. When one uses a graphic equalizer to attenuate the first peak, the overall system gain increases until the next (formerly lower) peak begins to feedback. That peak is then attenuated using another graphic EQ band, and the system gain can increase further. When the peaks have all been leveled to the extent possible with the EQ, the overall gain may increase from 6 dB to 10 dB above the initial gain before the feedback commences.
In conclusion
The graphic equalizer is a handy tool but cannot substitute for good acoustics or well-designed amplifier/loudspeaker systems. Excessive boosts, especially at the lower frequencies, drain much of the available amplifier power, overstress the drivers in the loudspeaker system, and reduce overall system headroom. Excessive cat removes noticeable portions of the program and the desired response peak of the noise component.
MASTER MUSIC PRODUCTION
Expert-led courses designed to take you from fundamentals to finished tracks.
HOUSEFrom bouncy bass and solid kicks, this course teaches you the most modern House music production techniques needed to succeed and stand out.
TRAPQuit sounding like generic Trap and produce something World with hints of the Far East. Create ethnic soundscapes to put your Trap ahead of the curve.
AMBIENTProduce relaxing, sophisticated psy-influenced ambient. Psychedelic and relaxing to listen to, create meditative soundscapes to put your listeners in Zen.