Equalizer adjustment method
Subwoofer: 20Hz-40Hz, the sound is strong and powerful when appropriate. Can control the sound of thunder, bass drum, pipe organ and bass. Excessive promotion will make the music turbid.
Bass: 40Hz-150Hz, is the basic part of the sound, its energy accounts for 70% of the entire audio energy, and is an important component of the musical style. When appropriate, the bass is properly relaxed, the sound is full and soft, when the sound is insufficient, the sound is thin, 150Hz, when excessively boosted, the sound will be dull, the brightness will be reduced, and the nasal sound will be enhanced.
Mid-bass: 150Hz-500Hz, which is the structural part of the sound. When the human voice is in this position, the singing voice will be overwhelmed by the music, and the sound will be soft and weak. When properly promoted, it will feel thick and powerful, increasing the strength and loudness of the sound. Excessive boost will make the bass sound stiff. Excessive boost at 300Hz is 3-6dB. If reverb is added, it will seriously affect the clarity of the sound. Midrange: 500Hz-2KHz, contains the low harmonics and overtones of most musical instruments, is the characteristic sound of snare drums and percussion instruments. When appropriate, the sound is clear and bright, when insufficient, the sound is dim. Excessive lifting will produce a phone-like sound.
Middle and high pitch: 2KHz-5KHz, which is the characteristic sound of string music (pulling the bow and string of the string music, the sound of the finger of the pulling music touching the string). When it is insufficient, the penetration of the sound decreases, and when it is too strong, it will mask the recognition of language syllables. Treble: 7KHz-8KHz, is the frequency that affects the sound layering. Excessive promotion will make the piccolo and flute sounds prominent, the language's tooth sound will be accentuated and the timbre will be hairy.
Extreme treble: When 8KHz-10KHz is appropriate, the metal transmission of the triangle iron and stand * is high, and the rhythm of the sand clock is clear and legible. Excessive boost will make the sound unnatural and easily burn the high frequency unit.
2. The balanced and pleasing sound should be: below 150Hz (bass) should be full, soft and flexible; 150Hz-500Hz (mid-bass) should be thick and powerful and not turbid; 500Hz-5KHz (mid-treble) should be bright and thorough No stiffness; above 5KHz (treble) should be slender, smooth and not sharp. When the entire frequency response characteristic is flat: the sound is naturally full and flexible, and the level is clear and pleasant. When the frequency response is multiple peaks and valleys: the sound is rough and turbid, the treble is piercing and hairy, and the sound reinforcement without layering is prone to feedback howling.
3. Sound characteristics of frequency: 30 ~ 60Hz Dullness It is difficult for human ear to feel if there is no considerable loudness. 60 ~ 100Hz heavy near 80Hz can produce a strong "heavy feeling" effect, high loudness will not give people a comfortable feeling, can give people a strong stimulating effect. 100 ~ 200Hz fullness and 200 ~ 500Hz strength can easily cause buzzing psychology. 500 ~ 1KHz Mingling 800Hz near 10Hz, will obviously produce a sense of noisy, narrow sense. 1K ~ 2KHz Translucent around 2800Kz has the greatest sense of brightness. 2K ~ 4Kz The sharp 6800Hz forms a screaming, sharp feeling. 4K ~ 8Kz crisp 3400Hz is easy to cause listening fatigue. 8K ~ 16Kz Slim> 7.5KHz, the sound is clear and slim.
Equalizer development trend
The equalizer composed of digital filters is called a digital equalizer. The digital equalizer can be made into a graphic EQ, and it can be made into a parametric EQ, or it can be made into both. It not only has excellent performance indicators, It is easy to operate, and can also store frequency response equalization characteristics for multiple purposes at the same time. It can be selected for different program requirements. Up to 99 frequency response characteristic curves can be stored. SONY's SRP-E300 is a multifunctional 2-channel digital equalizer with 10-band parametric equalization and 29-band graphic equalization, which can work simultaneously or independently, with limiter and noise gate function, high-precision 48kHz sampling, 20 Bit linear analog-to-digital / digital-to-analog conversion; with analog and digital input / output; RS-232C C interface, which can be used for external remote control Products with extremely high cost performance.
1. Most of the sound in this frequency band from 20 to 40 feels soft bass, rather than strong and powerful, which can be known through experiments. See what effect this band will give to the drum.
2. 40 ~ 150 is the basis of sound, but it is less than 70%, and the nasal sound of human voice is not in this band, probably around 250.
3. The frequency band 150-500 is a frequency band that needs to be handled very carefully. You must not increase the frequency band to obtain the strength of the human voice. If you are not careful, you will suffer.
4. "Excessive increase of 3-6dB at 300Hz, if added to the reverberation, will seriously affect the clarity of the sound." It should be said that as long as the reverberation is added in the low frequency part, it will affect the clarity of the sound. Of course, in current mixing techniques, this rule is not very important. Because, we often see them in the recording studios of Europe, America, Hong Kong and Taiwan for their ultra-short range reverb for bass drum and bass.
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