Hello. \ \x0d\ \x0d\EQ \x0d\EQ is the abbreviation of equalizer, which is called equalizer in Chinese mainland and equalizer in Hong Kong and Taiwan. This function is to adjust the gain value of the signal in each frequency band. 10 segment equalizer indicates that there are 10 adjustable nodes. The more nodes there are, the more accurate and difficult the curve can be adjusted. The order from left to right is from low frequency to high frequency [100 Hz, 200 Hz, 400 Hz, 600 Hz, 1 kHz, 3 kHz, 6 kHz, 12 kHz, 14 kHz, 16 kHz]. \ x0d \ x0d \ eqBasic knowledge of each frequency band \ x0d \ 1. [20-60hz] affects the spatial sense of timbre, because the pitch of music is mostly above this frequency, which is difficult to express, and powermp3 does not have this balance. \x0d\2。 【 60- 100Hz 】 It affects the mixing thickness of sound, that is, the pitch area of bass. If this frequency is full, the timbre will appear thick, and if it is insufficient, the timbre will become weak; If it is too strong, the timbre will have a low-frequency resonance sound and a roaring feeling. There are also a few instruments with extremely low frequency, such as drums, timpani, piano, cello and tuba, most of which are displayed in this section. \ x0d \ 3。 [80- 160 Hz] mainly shows the heavy feeling of music. If this part of the sound is played back well, you will feel that the music is heavy and confident. If this part performs well, you won't even feel the lack of bass when it is missing below 80Hz. If you don't perform well, the concert will feel dull and even dizzy. The playing limit of many subwoofer speakers can be used to judge the frequency limit of your subwoofer speakers. \ x0d \ 4。 [150-300 Hz] affects the sound intensity, especially the male voice. This frequency is the low-frequency pitch frequency of male voice and the root audio of chords in music. \ x0d \ 5。 [300-500 Hz] Display sound (singing, reading). You can see the thickness and strength of sound in this frequency band. If it's good, it's bright and clear, if it's not good, it's fine and turbid. \x0d\6。 [800Hz] affects the intensity of timbre. If this frequency is full, the timbre will appear very strong; If it is insufficient, the timbre will appear slack, that is, the components below 800Hz are prominent and the low-frequency components are obvious; If it is too much, it will produce a guttural sensation. Too many guttural sounds will lose the personality of the voice, and appropriate guttural sounds can increase sexiness. Therefore, the sound engineer calls this frequency "dangerous frequency", where vocals and percussion are mostly displayed. \x0d\7。 [1kHz] is the standard reference frequency for audio equipment testing. Usually, the parameters given in audio equipment are tested at 1kHz. This is the most sensitive frequency of the human ear. \x0d\8。 [1.2kHz] A little more is appropriate, but not too much, which can improve the brightness of the sound, and too much will make the sound hard. \x0d\9。 [2k-4kHz] Strong penetration. The resonant frequency of the human ear cavity is 1∽4KHz, so the human ear is also very sensitive to this frequency. 2-4kHz has a great influence on the brightness of sound, which should not be attenuated in general. This passage has a great influence on the level of music. Too few space-frequency components, poor hearing ability, blurred voice. If it is too thick, it will produce a feeling of coughing. Proper lifting can improve the brightness and clarity of the sound, but it should not be too prominent at 4kHz, otherwise the female voice will be too heavy. \ x0d \ 10。 [4k-8khz] This frequency most affects the clarity and brightness of speech. Without this frequency component, the timbre will become dull. If there are too many components in this frequency, the timbre will become sharper and the human voice may have teeth. This frequency is usually beautified by the voltage limiter. Some female voices and most wind instruments. \ x0d \ 1 1。 [8k- 12khz] This section is the high-pitched area of music, and it is most sensitive to the high-frequency performance of sound. Proper highlighting (just a little) is of great help to the level and color of the sound, and it also makes people feel rich in treble. But too much text will increase the background noise and make people feel sharp and creepy. Without this passage, the voice will lack appeal and vitality. \ x0d \ 12。 [12k- 16khz] can affect the overall color sense. If this period is too dim, the musical instrument will lose its personality, and if it is too much, it will have a burr feeling. 13.[ 16k-20kHz] Many people may not hear it. Not hearing it doesn't mean that the device can't play back. Only a few people can hear 20kHz. This frequency can affect the brightness of high frequency and the overall sense of space. Too little will make people feel a little bored, too much will produce a sense of drift, which is easy to produce hearing fatigue. The overtones of electronic chorus, guzheng piano and other musical instruments are mostly expressed here. \ x0d \ x0d \ Frequency effect of each section: \x0d\ 1, 20Hz-60Hz [too low] space ~ [half full] space feels good ~ [too high] low-frequency resonance makes a "buzzing" sound. \x0d\2, 60Hz- 100Hz [too low] weak ~ [half full] strong mixed thick ~ [too high] low-frequency resonance sound shows "boom" sound. \x0d\3, 100Hz- 150Hz [too low] thin ~ [half full] fullness is enhanced, and turbid ~ [too high] appears "buzzing" sound. \x0d\4, 150Hz-300Hz [too low] soft ~ [half full] strong voice ~ [too high] stiff. \x0d\5, 300Hz-500Hz [too low] hole ~ [half full] sound intensity ~ [too high] telephone voice color. \x0d\6, 800Hz [too low] has a sense of relaxation ~ [half full] has a strong sense ~ [too high] has a heavy throat. \x0d\7, 500 Hz- 1 kHz [too low] has a sense of contraction ~ [half full] the sound outline is clear ~ [too high] the sound protrudes forward. \x0d\8, 1-2KHz [too low] is loose, which makes the timbre not linear ~ [half full] and has a strong sense of transparency ~ [too high]. \ x0d \ 9,2-3khz [too low] hazy ~ [half full] brightness enhancement ~ [too high] dull. \x0d\ 10, 4KHz [too low] fuzzy ~ [half full] strong penetration ~ [too high] cough volume. \x0d\ 1 1, 4-5KHz [too low] The sound source is farther away ~ [half full] The loudness is stronger ~ [too high] The sound is closer. \ x0d \12,5-6khz [too low] blurred ~ [half full] clear ~ [too high] sharp. \ x0d \13,6-8khz [too low] dim ~ [half full] transparent ~ [too high] heavy tooth sound. \ x0d \14,8-10k [too low] has obvious flat ~ [half full] s sound, and the sense of permeability ~ [too high] is sharp. \x0d\ 15, 10- 12KHz [too low] dull and dull ~ [half full] strong metallic sound ~ [too high] sharp noise. \x0d\ 16, 12- 16KHz [too low] loses its luster ~ [half full] golden light splashes ~ [too high] harsh. \x0d\ 17, 16-20KHz [too low] lack of rhyme, color and timbre expression ~ [half full] feel the charm of sound through human skull conduction, rich in color and timbre expression ~ [too high] universal sound sense and instability. \ x0d \ x0d \ Simply put, \x0d\ 1, 100Hz belongs to the warm segment. If we strengthen this part, the bass will be softer and warmer. \x0d\2 and 200Hz belong to low pitch, and this section \x0d\3 and 300 Hz ~ can be appropriately weakened when timbre is adjusted. But sometimes highlighting this area will make the music look a little sticky, mainly in the frequency bands of 300Hz~800Hz \x0d\4 and 1KHz~2KHz, and it is easy to have "buzzing" sound. Weakening this frequency band will make the sound clean, but it will also lose some effects. 5 kHz ~ 4 kHz is warm without losing brightness, which is very suitable for guitar instruments. 6.4KHz~5KHz belongs to the frequency band with rough sound quality. If this part is too high, the overall volume will increase by more than \ x0d \ 7,7khz, so it belongs to the high frequency band, with sharp and aggressive sound quality, and it is easy to generate hiss \ x0d \ 8,8khz ~17KHz, which belongs to the timbre range of hair clips, such as "Chen Wenjing".