EQ is the abbreviation of graphic equalizer. Graphic equalizer, the English name is Graphics EQ, also referred to as "EQ", but the real "EQ" (equalizer) represents a broader meaning, that is, EQ includes "graphic equalizer". Graphic equalizer is a multi-band variable equalizer that uses sliding controls (sliders) as parameter adjustments. The logo under the slide controller corresponds to its frequency response. Every music player has an EQ called an "adjustment sound effect."
Extended information
1. 100Hz color warm area. If the signal frequency band is concentrated here, it should be appropriately strengthened.
2. The 200Hz color is dull and turbid, and must be appropriately weakened.
3. The backbone frequency of most music will be concentrated between 300-1kHz. Highlighting this frequency band can strengthen the bones of the timbre (for example, the sound of BASS strings). Of course, sometimes this area can appear "sticky", especially in the 300-800Hz range.
4. The 1.5k-2kHz color is a bit "buzzing". Of course, weakening this frequency band will make the sound much cleaner, but at the same time you
will also lose part of the strong support.
5. 2k-4kHz colors are warm without losing brightness, especially suitable for Guitar instruments. At the same time, it is appropriate to strengthen this frequency band in the early recording, so that it is easy to produce a full and textured sound quality during the later mixing.
6. 4k-5kHz is often a frequency band with rough sound quality, and the improvement in this part will also lead to an increase in the overall volume.
7, 7k and above are high frequency bands. The sound quality is sharp and "aggressive", and it is easy to produce "hiss...hiss..."
Sounds.
8. The hairpin timbre is usually in the range of 8k-10kHz. It is recommended that you find a way to control the hairpin timbre frequency band within this range, and weaken or cut off the excess part.
Baidu Encyclopedia: EQ