Attached table of frequency characteristics of four-section equalizer

Attached table of frequency characteristics of four-section equalizer: The auditory experience of the human ear is too low and plump and too high 6-20khz. The taste is lost. The color is bright and expressive, sharp and harsh. It is necessary to have rich overtones, layers, so that the song has sound beauty, the audience listen to the pleasing, the amount of promotion is not easy to be too strong. LF [Excessive bass, muffled sound; HF [Excessive high pitch, shrill sound. After the promotion of one frequency band, the impact on other frequency bands should be considered，Consider the clarity and fullness of the voice.