What is a speaker, an equalizer, and how to tune an audio equalizer?

Have you ever used Qianqian Jingting? There's an equalizer inside.

Equalizer is an electronic device that can adjust a large number of electrical signals of various frequency components, compensate for the defects of the speaker and the sound field through the adjustment of electrical signals of various different frequencies, compensate and modify various sound sources and other special effects, and the equalizer on the general mixer can only adjust the high-frequency, medium-frequency and low-frequency three-frequency electrical signals respectively.

The equalizer composed of digital filters is called digital equalizer, and the digital equalizer can be made into a graphical EQ, which can be made into a parametric EQ, and can also be made into an EQ with both, which not only has excellent performance indicators and is easy to operate, but also can store a variety of frequency response equalization characteristics for different program requirements, and can store up to 99 kinds of frequency response characteristic curves. SONY's SRP-E300 is a multi-function 2-channel digital equalizer with 10-band parametric EQ and 29-band graphical EQ, which can work simultaneously or independently, with limiter and noise gate functions, high-precision 48kHz sampling, 20-bit linear analog-to-digital conversion; With analog and digital input and output; RS-232C C port, can be used for external remote control.

A speaker is a big speaker in the box.

An equalizer is an equalizer that adjusts the high and low tones or individual audio.

One trick to teach you how to adjust the audio equalizer.

The role of the equalizer in the sound system:

Clause. First, it is to obtain a flat frequency response.

That is, in the sound field, the sound of each frequency band in the range of human hearing threshold (20Hz-20kHz) has neither peaks nor troughs. This requires special test equipment to attenuate the raised frequency bands in the sound field and enhance the collapsed frequency bands to achieve a flat frequency response.

Clause. Second, it is the subjective feeling of adjusting the loudness of the sound.

In general, the human ear tends to be more sensitive to the feeling of midrange at low volumes, and we need to appropriately improve the low frequency and midrange to achieve the balance of subjective loudness.

Clause. Third, it is to suppress the whistling noise generated by the microphone feedback.

Acoustic noise is formed by a large wave peak in a certain frequency band, and the acoustic noise can be suppressed after a large attenuation of this frequency band.

How to adjust the EQ:

1. Ultra-bass: The audio range is 20Hz-40Hz, and the sound is strong and powerful when appropriate, which can control the sound of thunder, bass drums, pipe organ and bass, but excessive lifting will make ** become muddy.

2. Bass: The audio range is 40Hz-150Hz, which is the basic part of the sound, and its energy accounts for 70% of the entire audio energy, which is an important component of the best style. When it is insufficient, the voice is thin, and when it is excessively raised, it will make the voice muffled, the brightness will be reduced, and the nasal voice will be enhanced.

3. Medium and low bass: the audio range is 150hz-500hz, which is the structural part of the voice, the vocals are located in this position, when it is insufficient, the singing voice will be submerged by **, the voice is soft and weak, and it will feel strong and powerful when it is appropriately promoted, and the strength and loudness of the sound will be improved, but when the promotion is excessive, the bass will become stiff, and the 300hz will be excessively raised by 3-6db, if coupled with reverberation, it will seriously affect the clarity of the sound.

4. Alto: The audio range is 500Hz-2KHz, including the low harmonics and overtones of most musical instruments, and is the characteristic sound of snare drums and percussion instruments.

5. Middle and high tones: the audio range is 2khz-5khz, which is the characteristic sound of string music (the rubbing sound of the bow and strings of the strings, and the sound of fingers touching the strings of the plucking music). When it is insufficient, the penetration of the voice decreases, and when it is too strong, it will mask the recognition of the syllables of the language.

6. Treble: The audio range is 7khz-8khz, which is the frequency that affects the layering of the sound.

7. Extremely high pitch: the audio range is 8khz-10khz, when appropriate, the metal permeability of the triangle iron and vertical fork is high, the rhythm of the sand clock is clear and recognizable, and excessive promotion will make the sound unnatural, and the pure mountain is easy to burn the high-frequency unit.

It is necessary for home audio to add an equalizer before the amplifier.

EqualizerAn electroacoustic processing device that adjusts the frequency response and amplitude of an acoustic signal. It can change the composition ratio of sound to harmonics, frequency response characteristic curve, frequency band width, etc. Frequency equalizers are widely used in various sound systems, such as hall amplification and playback systems, radio recording systems, and home audio systems.

That is to say, if it is a home speaker, the equalizer is not very different, and there is no need.

A mixer and an equalizer are not the same thing. The mixer generally has an equalizer, and the equalizer on the mixer can only adjust the high-frequency, medium-frequency, and low-frequency electrical signals separately.

A mixer, also known as a mixing console, amplifies, mixes, distributes, retouches and processes multiple input signals, and then outputs them through the master.

Equalizer is an electronic device that can adjust a large number of electrical signals of various frequency components, compensate for the defects of the speaker and the sound field through the adjustment of electrical signals of various frequencies, and compensate and modify various sound sources and other special functions.

There are manual equalizers or electronic software in the audio, which can improve and improve the sound quality of the audio, and can simulate the noise in the sound. But if the tone is not good, it will make the sound muffled or dry. Especially friends who like to listen to **, I hope that the high and low registers have a clear hierarchy, with both the powerful strength of the bass and the crisp silver bell-like treble.

Therefore, whether the equalizer is adjusted correctly or not has a crucial relationship with the sound quality of the audio. In addition, the woofer that must be installed in the speaker is then driven by a two-way divider, so that the bass and bass can take into account each other and make up for each other, making the sound quality more pleasant to the ear. The two-way circuit diagram is as follows:

In short, adjusting the equalizer can not only change the sound effect, but also adjust it according to your favorite audio level to enjoy the beautiful melody. The installation sequence of the equalizer is: audio source, equalizer signal input, equalizer signal output, power amplifier signal input, power amplifier power amplification output, speaker.

The numbers above 50, 150, etc. mean the frequency of the sound, the unit Hz, and there should be a number of db units on the left and right sides of the type, which is the gain value, in decibels.

40 to 80Hz is the bass range, 100 to 200Hz is the bass range, 1K is the CITIC range, 14 to 16K is the treble range, the smaller the sound frequency Hz, the deeper the sound, it is the bass, and the bigger the higher, it is the high audio.

Gain DB is to increase or decrease the sound of a certain frequency, if the user likes more bass, turn up the low frequency tone, the treble is slightly lower, if he likes more high sound, it is the opposite.