What are the commonly used stage professional audio equipment?

A wonderful performance not only requires performers, but also strict control and requirements for stage lighting and sound equipment. Many people think that stage sound is just a speaker and mixing console. In fact, professional stage sound equipment requires 10 different devices to support the entire stage sound system in order to achieve better stage sound effects. Let's take a look at the specific equipment:

1. Mixing console: A sound mixing device that has multiple channel inputs, each channel's sound can be processed separately, and has outputs such as left and right channels, mixing, and monitoring. It is an important equipment for sound engineers, recorders, and composers to create music and sound.

24 channel mixing console

2. Amplifier: A device that converts audio voltage signals into a rated power signal for driving speakers to produce sound.

The matching conditions for power amplifier are:

(1) The output impedance of the amplifier is equal to the load impedance of the speaker.

(2) The output power of the amplifier matches the nominal power of the speaker.

3. Frequency divider: The circuit or device that implements frequency division is called a frequency divider. There are many types of frequency dividers, and according to the waveform of their frequency division signals, there are two types: sine frequency division and pulse frequency division. Its basic function is to divide the full frequency band audio signal into different frequency bands according to the requirements of the combination speaker, so that the speaker unit can receive appropriate frequency band excitation signals and work in a priority state.

4. Reverberator: In the sound system of dance halls and large stage lighting concert venues, a very important part is the reverberation processing of human voices. After reverb processing, human singing can create an electronic sound aesthetic, giving the song a unique charm. It can mask certain defects in the voice of some amateur singers, such as hoarseness, throat sounds, and sharp vocal cord noise, by reverberating to make the sound less unpleasant. In addition, reverberation can also compensate for the phenomenon of insufficient overtones in the timbre structure of amateur singers due to lack of specialized vocal training. This is very important for the effectiveness of stage lighting concerts.

5. Tuner: Due to the different vocal conditions of people, the requirements for the pitch of accompanying music during singing also vary. Some people prefer lower tones, while others need higher tones. In this way, it is required that the pitch of the accompanying music should be adapted to the singer's requirements, otherwise it will feel very discordant between the singing voice and the accompaniment. If using accompaniment tape, it is required to use a tone changer for tone adjustment processing.

6. Effects: Sound equipment that provides sound field effects, including reverberation, delay, echo, and special processing of sound.

7. Pressure limiter: It is a general term for the combination of compressor and limiter. Its main function

(1) Protect the amplifier and speakers (speakers).

(2) Create special sound effects.

8. Equalizer: It is a device that increases and decreases different frequencies, and adjusts the ratio of bass, midrange, and treble. Its meaning has two aspects.

① Make necessary compensation for the frequency response curve of audio equipment or carriers to ensure that the output sound is not distorted.

② To meet the requirements of listening, the sound signal is processed and processed for creative purposes. In general, this type of device is not used frequently, so most people choose to temporarily rent it from audio rental vendors.

9. Speakers and speakers: Speakers are devices that convert electrical signals into sound signals. According to the principle, there are electric, electromagnetic, piezoelectric ceramic, electrostatic, and pneumatic types.

A speaker box, also known as a speaker enclosure, is a device that installs a speaker unit into a box. It is not a sound emitting component, but a sound aid component that displays and enriches bass. Generally speaking, it can be divided into three types: enclosed speakers, inverted speakers, and maze speakers.

Two way speakers

10. Microphone: A microphone is an electroacoustic transducer that converts sound into electrical signals. It is a unit with various types in the audio system, which can be divided into non directional (circular), directional (heart-shaped, supercardioid), and strong directional according to its directionality. Non directional is specifically used for band pickup. Directionality is used for picking up sound sources such as speech and singing. Strong directionality refers to a slender tubular microphone made using the principle of mutual interference of sound waves, specifically designed to pick up sound from a certain direction by excluding the sounds on the left, right, and back from the microphone pickup space. It is called a gun microphone and is used in art stages and news interviews. Divided by structure and application range, there are dynamic microphones, ribbon microphones, condenser microphones, pressure zone microphones - PZM, electret microphones, MS stereo microphones, reverb microphones, tone changing microphones, and so on.