The 31-band equalizer is one of the must-have functions on the mixer. Professional tuner can compensate for the distortion of the speaker and sound field by adjusting the electrical signals of different frequencies in the face of noise-filled music events. , compensate and modify various sound sources and other special effects. The equalizer on the general mixer can only adjust the three-stage frequency electrical signals of high frequency, intermediate frequency and low frequency respectively.
Equalizer adjustment methodSubwoofer: 20Hz-40Hz, strong and powerful when appropriate. Controls the sound of thunder, bass drums, organ and bass. Excessive promotion can make music confusing.
Bass: 40Hz-150Hz, is the basic part of the sound, its energy accounts for 70% of the entire audio energy, is an important component of the performance of music style.
When appropriate, the bass is relaxed and the sound is full and soft. When it is not enough, the sound is thin, 150Hz. When it is excessively lifted, the sound will be boring, the brightness will decrease, and the nasal sound will be enhanced.
Mid-bass: 150Hz-500Hz, is the structural part of the sound. The voice is located at this position. When it is insufficient, the singing sound will be drowned by the music. The sound is soft and weak. When it is properly raised, it will feel strong and powerful, and improve the intensity and loudness of the sound. Excessive boosting will make the bass hard, and 3-6dB overshoot at 300Hz. If you add reverb, it will seriously affect the clarity of the sound.
Midrange: 500Hz-2KHz, containing the low harmonics and overtones of most instruments, is the characteristic sound of snare drums and percussion instruments. The sound is clear and bright when appropriate, and the sound is awkward when not enough. A phone-like sound is produced when over-promoted.
Middle and high-pitched sound: 2KHz-5KHz, which is the characteristic sound of the string (the sound of the bow and the string of the string, the sound of the finger of the play string). When the sound is insufficient, the penetrating power of the sound is lowered. When it is too strong, the recognition of the language syllable is masked.
Treble: 7KHz-8KHz, is the frequency that affects the sound layering. Excessive ascension will make the piccolo and flute sound prominent, the language's teeth will be aggravated and the tone will be hairy.
Extremely high sound: 8KHz-10KHz, when appropriate, the metallurgical permeability of the triangle and the vertical * is high, and the rhythm of the sand clock is clearly distinguishable. Excessive lifting will make the sound unnatural and easily burn high-frequency units.
Phonological characteristics of frequency30~60Hz dullness, if there is no considerable loudness, it is difficult for the human ear to feel.
60~100Hz heavy 80Hz can produce a strong "heavy feeling" effect, high loudness will not give a comfortable feeling, can give people a strong stimulation.
100~200Hz plump
The intensity of 200~500Hz is easy to cause the boring psychology.
If the 500~1KHz is brighter than 800Hz near 800Hz, it will obviously produce a sense of noisy and narrow.
1K~2KHz translucent 2800Kz has the brightest relationship.
2K~4Kz sharp 6800Hz forms a screaming, sharp feeling.
4K~8Kz crisp 3400Hz is easy to cause hearing fatigue.
8K~16Kz slender>7.5KHz sound is clear and slender.
Attention when using professional equalizer1. Normally, the acoustic feedback is concentrated in the range of 100 Hz to 10 kHz, and the adjustment should be targeted.
2. When adjusting the sound field, bypass other peripheral devices except the room equalizer, and the equalizer of the channel where the microphone is located on the mixer should also be passed through without adjustment.
3. When using the equalizer to adjust the acoustic feedback, just press the compressor to pass through, and other peripheral devices such as the exciter should be adjusted to the best performance state. The equalizer of the channel where the microphone is placed on the mixer should also be adjusted to the best performance. State, this is a clear difference from the method of adjusting the sound field.
4. Whether the sound field is adjusted by the equalizer or the sound feedback is adjusted, if there is a pressure limiter in the system, it must be passed through, otherwise the microphone will be subjected to the pressure limit of the compressor when it is initially returned; When the signal is large and the compressor cannot be pressed, the restriction that the compressor will break through the compressor will become very powerful, which will easily damage the equipment.
5. When adjusting the sound field and adjusting the sound feedback, you can play a little background music while adjusting, so that the sound field is active and more convenient to adjust.
The advantage of entertainment tablet lies in having a powerful chip and excellent hardware. If you want to play various online videos on the tablet and run various software smoothly, the performance of the hardware is an absolute prerequisite. In addition, a high-speed and stable WIFI module is also required, which must be compatible with multiple 802.11 B/G/N protocols at the same time, so that the webpage can be loaded instantly when the webpage is opened, and the online video can be played smoothly. So hardware is the premise and foundation, without good performance everything else is empty talk.
In addition to having a good CPU as a prerequisite, it is equally important to carry a professional video player. A professional video player must perform equally well both online and offline.
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