The equalizer is a device that boosts, attenuates, and adjusts the bass, midrange, and treble ratios for different frequencies.
Its meaning has two aspects:
(1) Make necessary compensation for the frequency response curve of audio equipment or carrier so that the output sound is not distorted;
(2) In order to create the need for audio signal processing and processing to meet the listening requirements.
2. Frequency divider
The divider is a frequency divider circuit or device. According to the requirements of the combined speaker, it divides the full-band audio signal into different frequency bands, so that the speaker unit gets the excitation signal of the proper frequency band and works in a better state.
There are many types of frequency dividers. There are two types of frequency dividers: sine frequency division and pulse frequency division.
The reverberator is a very important part of the dance hall's sound system and large-scale stage lighting concert venues. Its main role is to deal with the reverberation of vocals.
It can mask some of the flaws in the voice of some amateur singers, such as husky, larynx, and squeaky vocal chords, by masking the reverberation process, making the sound less ugly. After a person's singing voice is processed by reverberation, the sound can produce a sense of beauty of the electronic sound, which makes the singing sound unique.
4. Loudspeakers and speakers
Loudspeakers are devices that convert electrical signals into acoustic signals. According to the principle, there are electric, electromagnetic, piezoelectric ceramic electrostatic and pneumatic.
The speaker, also known as a speaker box, is a device for mounting a speaker unit in a box. It is not a sounding part, but a sound-inducing part for displaying and enriching bass. Generally can be divided into three types: closed speakers, inverted speakers, labyrinth speakers.
5. Post amplifier
The amplifier is a device that converts an audio voltage signal into a ration power signal for driving speaker sound.
There are two main power amplifier matching conditions:
(1) The output impedance of the amplifier is equal to the speaker load impedance;
(2) The output power of the amplifier matches the nominal power of the speaker.
6. Pressure limiter
Pressure limiter is the collective name for the combination of compressor and limiter. Its main role is two, one is to protect the power amplifier and speakers (speaker), and the other is to create special sound effects.
Provides sound field effects including reverb, delay, echo, and audio equipment for special processing.
Mixer with multiple channel inputs, each channel's sound can be processed separately, and has left and right channels; mixing; listening and other outputs of a sound mixing device, is important equipment for a sound engineer, recordist and composer to music and sound creation.
Because people's ability to accept noise varies, the tone requirements for accompaniment during singing are also inconsistent. Some people hope that their voices will be lower, while others will need to be higher.
In this way, the tone of the accompaniment music should be adapted to the singer's requirements; otherwise it will feel that the song and the accompaniment are incongruous. If you use the accompaniment band, you will need to use a tone changer to make the tone change.
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