2. Mixer: It is an important equipment for sound engineers, recording engineers and composers to create music and sound. A mixing device with multiple channel inputs, the sound of each channel can be processed separately, and the left and right channels can be output, mixed, monitored, etc.
3. Frequency divider: The circuit or device that realizes frequency division is called frequency divider. There are many kinds of frequency dividers, which are divided into sine frequency dividers and pulse frequency dividers according to the different waveforms of the divided signals. The main function of the frequency divider is to divide the full-band audio signal into different frequency bands according to the requirements of the combined speaker, so that the speaker unit can get the excitation signal of the appropriate frequency band and work in the best state.
4, reverberator: reverberator is the reverberation treatment of human voice, so that human voice can produce a kind of electronic beauty after it comes out, making the song more charming. Simply put, it is to make the singing sound good. At the same time, it also makes up for the phenomenon that amateur singers are not rich in overtones in timbre structure because they have not undergone special vocal training. This is one of the reasons why singing on stage is better than usual.
5. Toner: According to the different voice conditions of each person, the accompaniment music is processed through the tone changer to adapt to the individual timbre.
6. Effector: Audio equipment that provides sound field effect, including reverberation, delay, echo and special processing of sound.
7. Pressure limiter: refers to the combination of compressor and pressure limiter. Its main function is (1) to protect the power amplifier and speakers (speakers). (2) Create special sound effects.
8. Equalizer: It is a device for enhancing and attenuating different frequencies and adjusting the proportion of bass, midrange and treble. Its significance 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 meet the requirements of listening, the sound signal is processed and created. Under normal circumstances, this kind of equipment is not used many times, so most people will choose to rent it temporarily from the audio renter.
9. Speakers and sound boxes: Speakers are devices that convert electrical signals into sound signals. According to the principle, there are electric, electromagnetic, piezoelectric ceramic electrostatic and pneumatic types. Sound box, also known as sound box, is a device that puts the speaker unit into the box. It is not a pronunciation component, but an auxiliary component that displays and enriches bass. Generally speaking, it can be divided into three types: closed speakers, inverted speakers and labyrinth speakers. Speaker equipment is very concerned about the location factor given to it when building the stage.
10. Microphone: Microphone is an electroacoustic transducer that converts sound into electrical signals. It is the most diverse unit in the sound system. According to its directivity, it can be divided into non-directivity (circular), directivity (heart-shaped, hypercenter) and strong directivity, in which non-directivity is specially used for band pickup; Directivity is used to pick up sound sources such as sound and singing; Strong directivity is a slender tubular microphone controlled by acoustic interference, which is called gun microphone. It is used in art stage and news interview to pick up the sound of a certain direction and exclude the sound on the left and right sides and the rear from the microphone pickup space. According to the structure and application scope, there are dynamic microphone, aluminum ribbon microphone, condenser microphone, pressure zone microphone-PZM, electret microphone, MS stereo microphone, reverberation microphone, tuning microphone and so on.
The whole set of stage sound equipment is basically composed of the above professional sound equipment, and the lack of one will greatly reduce the stage sound effect, so the whole set of stage sound equipment is essential.