Music digital equalizer
MATLAB GUI interface
Different MP3 players have different equalizer settings. Take the two Korean high-end brands iRiver and iAUDIO as examples. The EQ equalizers of both are divided into 5 frequency bands, but the division of frequency bands is different. iRiver’s product EQ is divided into five sections: 50Hz, 200Hz, 1KHz, 3KHz and 14KHz, each section can be adjusted in 10 levels: -15dB, -12dB, -9dB, -6dB, -3dB, 0dB, + 3dB, +6dB, +9dB, +12dB and +15dB; and iAUDIO's product EQ is divided into 60Hz, 250Hz, 1KHz, 4KHz and 12KHz, each segment has 0db-+12db, a total of 12 levels Tune. Although the frequency divisions of the two are different, they are basically similar, and have similar effects on the adjustment of sound effects. Let's take a look at the effects of each frequency band of the equalizer and the impact on the sound after adjustment.
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The increase in the 20Hz-60Hz
frequency band can make the music more powerful. If the increase in this frequency band is too low, the middle and high frequencies of the sound will be more prominent and the sense of balance will be lost; if the increase is too high, the sound will be muddy and unclear. The sharpness deteriorates, especially the low frequency part. -
60Hz——250Hz
is the low frequency part of music. The ratio between it and the high and mid tones constitutes the balance of the tone structure.