At the end of the year, it is the peak season for various parties, banquets and performances. An excellent horse matched with a good saddle, an excellent stage performance is indispensable for a set of professional stage sound equipment. There are many kinds of stage audio equipment on the market now, with different functions, which brings certain difficulties to the selection of audio equipment. In fact, usually professional stage sound equipment is by the microphone + mixer + amplifier + speaker can be. In addition to the microphone, sometimes you need a DVD player, a computer to play music, etc., you can also use only a computer. If you want professional stage sound effects, in addition to the need for professional stage construction staff, but also need to add power fruit, sequencer, equalizer, pressure limiter and other sound equipment.
Here we take a look at the main professional stage sound equipment:
1, mixer: with multiple channel input, each channel of sound can be processed separately, and there are left and right channel output, mixed output, monitoring output. Important equipment for sound engineers, sound engineers and composers to create music and sound.
2, power amplifier: a device that converts the audio voltage signal into a quantitative power signal to drive the speaker sound. The matching condition of power power is: the output impedance of the power amplifier is equal to the load impedance of the speaker, and the output power of the power amplifier is equal to the rated power of the speaker.
3, reverberator: In the song and dance hall sound system and large stage lighting arena, the reverberation processing of human voice is very important. After reverb processing, the human voice can produce a kind of electronic sound aesthetic feeling and make the singing more appealing. For some amateur singers, vocal defects such as hoarse, guttural, and high-pitched vocal chords are masked by reverb processing, making the voice less harsh. In addition, reverberation can also make up for the lack of overtones in the timbre structure produced by amateur singers without special vocal training. It is crucial to the effect of stage lighting.
4. Frequency divider: The circuit or device that realizes frequency divider is called frequency divider. There are many types of dividers, which can be divided into sinusoidal divider and pulse divider according to the waveform of their divider signal. Its basic function is to decompose the full-band sound signal into different frequency bands according to the requirements of the combined speaker, so that it can get the appropriate frequency band excitation signal, so that it can work in the best state.
5, modulator: Because people's voice conditions are different, singing the tone of the accompanying music requirements are also different, some hope to be lower, some high. This requires the tone of the accompanying music to adapt to the requirements of the singer, otherwise it will produce singing and accompaniment is very inconsistent. If the accompanying tape is used, it is necessary to use a modulator for modulation processing.
Pressure limiter: It is a general term for a compressor and a limiter. Its main role is to protect the power amplifier and speakers (speakers), and to create special sound effects.
7, effect device: provides sound field effects, including reverberation, delay time, echo and special sound processing sound device.
Equalizer: It is a device that lifts, attenuates, and adjusts the ratio of bass, middle and treble to different frequencies.
9, speakers and speakers: speakers are devices that turn electrical signals into sound signals. According to the principle can be divided into electric, electromagnetic, piezoelectric, electrostatic and pneumatic.
The speaker, also called the speaker box, is a device that puts the speaker unit into the box, which is not a pronunciation part, but an acoustic part that displays and enriches the bass. It can be broadly divided into three categories: closed speakers, inverted speakers, labyrinth speakers. The sound equipment is very concerned about the positioning factors when the stage is built.
Handset: A handset is an electroacoustic transducer that converts sound into an electrical signal. In the field of art and news interview, according to the structure and application range, there are directivity, directivity (circular), directivity (heart, superheart) and strong directivity, among which the non-directivity is specially used for band pickup; Directivity is a kind of sound source used in speech, acoustics, etc. Directivity is a kind of sound source used in speech, acoustics, etc., for artistic occasions and news interviews; According to the structure and application range, there are moving-coil microphones, aluminum microphones, capacitive microphones, electric tube microphones, etc.