The home theater network () competent sound engineers know what the sound in each band represents, so you can adjust the sound according to your needs. For home theater debugging, it's still useful to know what the sound in each band stands for—because you can determine which frequency response your system is too strong or too weak based on listening to make targeted adjustments. Below, we will make these sounds visual, so that you can see them and think of them.
The human ear feels the sound of each frequency band of the sound frequency (EQ, sound effect)
The human ear feels the sound frequency from the lowest 20Hz to the highest 20KHz, while the human voice frequency range is concentrated between 80Hz~12kHz, the sound of different frequency bands.
The sound is different for people.
1, 20Hz–60Hz part. This promotion can give a strong feeling to the music, giving people a very loud feeling, such as thunder. If the elevation is too high, it will be turbid, resulting in poor definition, especially for low-frequency response and low-frequency audio equipment.
2. 60Hz–250Hz part. This is the low-frequency structure of music, which contains the basic sounds of the rhythm part, including the main sound of the pitch and rhythm sounds. Its ratio to the high-pitched tone constitutes the balance of the tone structure. Raising this section will make the sound full, and excessive boost will make a rumble. Attenuating this band and the high midrange will make the sound thin.
3. 250Hz–4KHz part. This section contains the low-frequency harmonics of most instruments, and affects the clarity of sounds such as vocals and instruments. The adjustment should match the setting of the front bass, otherwise the sound quality will become very dull. If the lift is too much, the sound will be like the sound in the phone; if the 600Hz and 1kHz are excessively raised, the sound will be like the sound of the speaker; if the 3KHz is raised too much, the speech of the speech will be masked, that is, the articulation will be unclear and the lip sound will be " m, b, v" are difficult to distinguish; if the 1kHz and 3kHz are excessively raised, the sound will have a metallic feel. Since the human ear is sensitive to this frequency band, this segment is usually not adjusted, and excessively increasing this segment will cause hearing fatigue.
4, 4kHz – 5KHz part. This is the frequency band that affects the sense of presence (distance). Raising this frequency band makes people feel that the distance between the sound source and the listener is a little closer; the attenuation will make the distance of the sound farther; if it is increased by 6dB around 5KHz, the sound power of the whole mixed sound will be improved. 3dB.
5, 6 kHz – 16 kHz part. This band controls the brightness, macro brightness and sharpness of the tone. Generally, raising this part makes the sound loud, but not clear, and may cause the tooth to be too heavy; attenuating this part makes the sound clear and the sound quality is slightly thin. This band is suitable for reducing vocals. The features of several common EQ combinations are listed below.
â— POP: Pop music, which requires both vocal and instrumental music, the combination is average, so the fluctuation of the EQ curve is not very large.
â—ROCK: Rock music, its high and low ends are greatly enhanced, the bass makes the music powerful and powerful, the rhythm is strong, and the high-pitched parts are clear and even harsh.
â— JAZZ: Jazz, compared with POP, it enhances the 3-5KHz part and enhances the sense of presence.
â—ClassICal: Classical music, it is also promoted in two parts, mainly highlighting the performance of the instrument.
â— VOCal: vocal, the frequency of the sound emitted by the human voice is relatively narrow, mainly concentrated in the intermediate frequency part. In addition, it should be noted that each person's sound perception of different frequencies is different, and the frequency response of the audio playback device is also different. The human hearing curve is only drawn according to statistical data, so others sound very natural. It may feel uncomfortable, and the adjustment of the equalizer needs to be individually adjusted according to the characteristics of the listening and the playing device used.
Instrument frequency table
The violin 200Hz~400Hz affects the fullness of the sound; 1~2KHz is the plucking sound band; 6~10KHz is the timbre brightness.
The viola 150Hz~300Hz affects the intensity of the tone; 3~6KHz affects the tone performance.
Cello 100Hz~250Hz affects the fullness of the sound; 3KHz affects the brightness of the sound.
The bass violin 50Hz~150Hz affects the fullness of the sound; 1~2KHz affects the brightness of the sound.
The flute 250Hz~1KHz affects the fullness of the sound; the brightness of the sound affected by 5~6KHz.
The black tube 150Hz~600Hz affects the fullness of the sound; 3KHz affects the brightness of the sound.
The oboe 300Hz~1KHz affects the fullness of the sound; 5~6KHz affects the brightness of the sound; the 1~5KHz boost makes the sound bright and gorgeous.
The large tube 100Hz~200Hz sounds full and deep, and the 2~5KHz affects the brightness of the sound.
The small 150Hz~250Hz affects the fullness of the sound; the 5~7.5KHz is the bright and crisp frequency band.
The horn 60Hz~600Hz will make the tone harmonious and natural; the strong blowing sound is radiant, and the 1~2KHz is obviously enhanced.
The trombone 100Hz~240Hz enhances the fullness of the tone; the 500Hz~2KHz boost makes the tone become brilliant.
The large 30Hz~200Hz affects the fullness of the sound; the 100Hz~500Hz boost makes the sound deep and thick.
The piano 27.5~4.86KHz is the range frequency band. The tone changes thinner with increasing frequency; 20Hz~50Hz is the formant frequency.
The harp 32.7Hz~3.136KHz is the range frequency. The small-strength plucking sound is soft; the large-strength plucking sound is full.
The saxophone 600Hz~2KHz affects the brightness; raising this frequency makes the tone clear.
The saxophone bB 100Hz~300Hz is the thick feeling that affects the tone. Raising this frequency band can make the initial vibration characteristics of the tone more delicate and enhance the expressive power of the tone.
The guitar 100Hz~300Hz enhances the fullness of the tone; 2~5KHz enhances the expressiveness of the enhanced tone.
Bass guitar 60Hz~100Hz bass fullness; 60Hz~1KHz affects the intensity of the tone; 2.5KHz is the chord audio.
The electric guitar 240Hz is the fullness frequency; the 2.5KHz is the fuller performance of the brightness frequency 3~4KHz.
Electric bass 80Hz~240Hz is the fullness frequency; 600Hz~1KHz affects the intensity of the tone; 2.5KHz is the chord audio.
Tambourine 200Hz~240Hz resonance audio frequency; 5KHz affects the sense of presence.
Snare drum (sound drum) 240Hz affects fullness; 2KHz affects strength (loudness); 5KHz is chord audio (overtone)
The full drum 360Hz affects the fullness; 8KHz is the hardness frequency; the overtone can reach 10~15KHz
The bass drum 60Hz~100Hz is the bass velocity frequency; 2.5KHz is the tapping sound frequency; 8KHz is the drumhead overtone audio frequency.
Drum (Drum) 60Hz~150Hz is the intensity audio, which affects the fullness of the sound; 5~6KHz is the overtone audio.
镲250Hz strong, tough, sharp; 7.5~10KHz sound sharp; 1.2~15KHz 镲 edge overtone "Golden light splash".
Singing voice (male) 150Hz~600Hz affects the intensity of singing voice. Enhancing this frequency band can make the singing voice resonate and enhance the intensity.
Singing (female) 1.6~3.6KHz affects the brightness of the sound. Raising the frequency can make the sound clear and transparent.
Voice 800Hz is a "dangerous" frequency. Too much improvement will make the tone "hard" and "squeaky".
A hoarse boost of 64Hz~261Hz will improve the tone.
Throat sound attenuation of 600Hz~800Hz will improve the tone
The nasal sound is attenuated by 60Hz~260Hz, and the 1~2.4KHz can improve the tone.
Tooth sounds that are too heavy at 6KHz will produce severe tooth sounds.
If the cough sound is too high, 4KHz will cause a serious cough (the tone when the radio frequency deviates).
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