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Stage sound in many types of audio equipment, under normal circumstances by the microphone (or a wireless microphone) mixer amp can. Sources in addition to the microphone, sometimes also need DVD, computer play music, also available computer. However, if during a professional event planning, opening ceremonies, we should stage a professional sound, stage set up in addition to professional staff, we should also add effects, timing, equalizers, audio equipment such as voltage limiter These devices can be purchased through the manufacturer or sound rental business rental.
Let's hear sound stage lighting equipment rental center stage audio experts talk about what are the main equipment:
1, mixer: with multiple input channels, each channel can be separate voice processing, and has left and right channels, mixing, monitoring the output of such a sound mixing equipment. Is the sound engineer, sound engineer and composer of music, sound creation of vital equipment.
2, the power amplifier: the audio signal into a fixed voltage power signal used to drive the speaker sound equipment. Power amplifier matching conditions (1), the speaker amplifier output impedance is equal to the load impedance. (2), the output power amplifier and speakers to match the nominal power.
3, the divider: to achieve frequency divider circuit or device is called. There are many types of crossover, based on their different frequency signal waveform has sinusoidal frequency and pulse frequency two. Its basic role is, according to the combination of speaker's request, the full-band audio signal into different frequency bands, so the speaker unit to be appropriate band excitation signal, working in the best condition.
4 reverb: sound system in the dance hall and a large concert hall stage lighting, a very important part is the vocal reverb processing. Person's voice through reverb treatment, can produce an electronic sound of beauty, so some songs unique charm. It can exist in a number of amateur singers voice some of the shortcomings, such as the hoarse, guttural vocal cords and sharp noise to cover up the noise through reverberation processing, so the sound is not so ugly. In addition, sound can also be mixed to make up for amateur singers because of vocal training is not specially generated sound is not rich harmonic structure of the phenomenon. This concert will be held on the stage lighting effects is very important.
5, the pitch shifter: As the people's voice conditions vary, accompaniment music in concert pitch when the requirements are inconsistent, some people want to lower, while others need higher. This requires the accompaniment of music tone should be adapted to the requirements of the singer, otherwise it will feel very discordant singing with accompaniment. If accompaniment is required for modulation pitch shifter handle.
6, the effect: Provides sound field effects, including reverb, delay, echo and the sound of audio equipment for special treatment.
7, the pressure limiter: a combined compressor and limiter collectively. Its main role (1), to protect amplifier and speakers (speakers). (2) to create special sound effects.
8 Equalizer: to enhance the frequency is different, attenuation, adjust the bass, midrange, treble the proportion of equipment. There are two aspects of its meaning. ①, audio equipment or carriers of the frequency response curve for the necessary compensation to the sound output without distortion. ②, in order to create the need for sound signal processing to meet the listening requirements. Under normal circumstances the use of low frequency of this equipment, so most people would choose to lease the business to the temporary rental of sound.
9, the speaker and speaker: the speaker is to convert electrical signals into acoustic signals of the device. According to principles distinguish between electric, electromagnetic, electrostatic and piezoelectric ceramic-type pneumatic. Speakers also known as speaker box, speaker unit is put into the box in the device, it is not the pronunciation part, but to help display and rich bass sound components. Can be divided into three types: closed-end speakers, phase inversion type speaker, labyrinth speakers. Sound equipment set up in Shenzhen when the stage to the location of factors very much about it.
10, the microphone: microphone is the sound into electrical signals of a electro-acoustic transducer device. Is the type of sound system in one of the largest unit, to distinguish its directivity can be divided into non-directional (circular), directional (cardioid, super cardioid) and strong directivity, which is designed for non-directional band pickup used; directivity is used for voice, voice and other audio pickup; strong point is the special position of the source to pick up a certain sound and to the right and left and behind the microphone picked up voices excluded from the space outside the specifically the use of sound principles of mutual interference, the use of acoustic interference tube made of a slender tube microphone, known as the shotgun microphone, and news for the art scene interviews; according to the structure and the distinction between a moving-coil microphone applications , ribbon microphone, condenser microphone, the pressure zone microphone-PZM, electret microphone, MS stereo microphone, microphone reverb, modulation microphone and so on.