Bass 40- 150HZ: responsible for the looseness of sound, which can also be called the softness of bass;
Bass 150-500HZ: responsible for sound intensity.
Midrange 500-2KHZ: responsible for the brightness of the sound.
Medium-high 2KHZ-5KHZ: responsible for sound transparency.
High note 5KHZ- 10KHZ: responsible for the crispness of sound.
/kloc-extremely high sound above 0/0 khz: responsible for the fineness and resolution of sound.
Band influence:
1.20hz-60hz segment
This frequency band represents the diving quality of the speaker. If there are too many frequency bands, the bass will be turbid and buzzing, and some people will think it is a standing wave.
This frequency band will be felt in natural scenes such as helicopters, aircraft engine sounds, thunder and lightning sounds, landslides, tides and rough waves.
This frequency band will give people an immersive shock.
The so-called treble is easy to get and bass is hard to find, which refers to this frequency band.
Audio equipment with poor low frequency response and heavy low frequency should pay special attention to this frequency band, not lack of it.
The bookcase we usually use is basically not in this frequency band.
2.60 Hz -250 Hz band
This frequency band is the low-frequency basis of music, and its proportion with high school notes constitutes the balanced feature of timbre structure.
This frequency band directly affects the fullness, intensity and density of sound.
If there is too much in this section, the speaker will rumble. If there is too little in this band, the sound will be thin, sharp and bright, and the sound will be unbearable. This frequency band is directly related to the speaker's listening ability.
An intolerant speaker cannot be called a good speaker.
Speaker design this frequency band is the most important.
3.250 Hz -4 kHz section
This part contains the low-frequency harmonics of most musical instruments, and affects the clarity of voices and musical instruments. The tuning should be coordinated with the setting of the front bass, otherwise the sound quality may be dull.
If 600Hz and 1kHz are excessively raised, the sound will be like the sound of a horn.
If the 3KHz is increased too much, it will cover up the speech recognition sound, that is, slurred speech, making the lip sounds "M, B, V" difficult to distinguish.
If 1kHz and 3kHz are excessively increased, the sound will have a metallic feeling.
Because the human ear is sensitive to the frequency bands of 1khz and 3khz, too many frequency bands will make listeners uneasy and their hearing will be impaired.
General speaker design should not be too much.
4.4 kHz to 5 kHz part
This passage directly affects the speaker's voice:
Sense of existence (sense of distance) and sense of leaving the frame.
We call it a sound field.
If you promote this passage, listeners will feel that the audio-visual image is approaching, and some friends will show that the singer has a big mouth and is close to you, just like singing in front of you.
Attenuation will make the sound feel farther away, and the vocal instruments will fall back, feeling like a concert.
We can adjust this paragraph appropriately until it suits our hearing.
Note: If the sound power of the whole mixed sound is increased by 6dB around 5KHz, it will be increased by 3dB.
5.6 kHz-16 kHz part
This paragraph is related to the brightness, clarity, width, transparency and sense of space of the speaker sound.
Lifting this section will make the voice louder and the thickness of the human voice will increase, but the sense of transparency and space will become worse, and it may also cause excessive tooth loss.
This is why the treble design of most speakers should increase the anti-attenuation.
Attenuating this passage will make the sound clear and bright, gorgeous and pleasing to the ear, but the sound is thin and bright, too gorgeous and noble, but not pleasant to listen to.
This passage is of great significance to the restoration of the speaker's voice, which directly affects the speaker's timbre and is cautious.