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Equipment required for holding conferences and exhibitions


Audiovisual equipment is required for all types of conferences, especially for international conferences. The requirements for audiovisual equipment are more stringent. Whether it is audio, microphone, projector, screen, etc., it must have a certain quality, so it needs more professional assistance. planning.
Projection equipment: refers to the auxiliary equipment used in the speech in the conference room, such as the following specific equipment
1. Slide projector In the conference industry, the 35mm slide projector is most commonly used for slide projection. The Kodak Ai Ying at-iii is the most resistant machine in the 35mm fantasy machine. This type of machine provides auto focus, wired remote control, high-brightness image and lamp replacement on the back. The brightness of the standard Kodak Love Shadow series is suitable for small conference rooms and screens smaller than 2.4 meters. In any case, long-distance or large-screen projections must have a light-saturated light bulb, Kodak's Aurora series slide projectors and brighter bulbs, but these brighter bulbs are shorter and more expensive, so the audiovisual rental company will A higher fee is charged. The super light projector is used for screens up to 3.7 meters wide and the effect is very good. When coupled with a high-speed lens, the super-light projector can project at a screen below 3.7 meters wide and within 27.4 meters. The larger the screen, the more brightness it needs, so any screen larger than 3.7 meters would require a Xenon bulb slide projector. The xenon bulb is filled with high pressure gas. Most audiovisual rental companies require trained people to operate these devices.
Although the Xenon bulb slide projector must be used in larger locations, there are two potential problems to be aware of: overheating can cause the slide to distort or melt; the cooling fan is very noisy. Regardless of any type of slide projector, slides and lenses must be paid special attention. Kodak's slide slots are available in 80-piece and 140-piece formats, and the universal 80-slide slot design is suitable for most installations. The luxurious universal slot is used for business cards, plastic sheets and 3 mm thick glass sheets. The lens is an enlarged projection of the slide image onto the screen, and the size of the lens depends on the projection distance and the screen size. The general audiovisual rental company provides a 10-15 cm zoom lens for rental slide projectors. If you need a long or short distance lens, the audiovisual rental company will charge an additional fee. Another accessory file is to extend the cable remote control distance. Currently, there is a wireless remote control to choose from, but the compatibility must be determined in advance.
2. The slide projector is the simplest audio-visual equipment. It uses the mirror refraction method to project the data of the transparent film to a maximum of 3 meters, so that the object can be enlarged and projected onto the screen. Thus, the participants do not need to squeeze all the fronts. See the "physical" introduced by the speaker. In addition, the lens of the camera can be automatically focused or zoomed in or out. Another feature of the physical projector is that the light source can be completely controlled within the range of the shelf, and the quality of the small single gun projected on the screen may be increased by the general professional camera when the additional illumination of the object is provided. reduce.
Although the 4.16mm projector has been quickly replaced by video recorders, some speakers use dynamic projectors. The most commonly used projectors are 16mm projectors. When purchasing, it is necessary to specify that the film is audible or silent, if it is audible. The film determines the optical or tape-type soundtrack, the optical track is recorded on the perforations on both sides of the film, and the tape-type track is placed on the film. Tape film is occasionally used in the Continental and is not commonly used in the local audiovisual rental market. If there is a customer who needs to use it, it will take a little more time to arrange it. The sound of the 16mm projector must be connected to the music system. Although most of the projectors have built-in speakers, they are usually only used in smaller spaces and their sound quality is not good. The next step to consider is the tape-on mechanism. The manual tape projector requires the operator to pass the film through many gates and components. The automatic tape-on projector automatically mounts the film to the projector. In order to avoid mistakes in the belt and operation, it is best to hire a professional. For a slide, the projection of a long-distance large screen requires the use of a bulb with a high color saturation. The next step after the standard 16mm projector is the sail marc bulb projector. The 16mm projector bulb with the highest color saturation is a xenon bulb. Just like the Xenon bulb slide projector, such projectors must be operated by professionals. Xenon bulb projectors are very expensive, but they are still much cheaper than TV projectors for projecting the same space size, and 16mm movies are much better than videotape signals.
5. The curtain wall selects an inappropriate projection image of the screen material, and the projection device is ineffective. The screen size must first be determined by the screen size, and the screen size must take into account the capacity of the conference room; size and ceiling height. Once you have decided on the size of the screen, then the following three key items are considered: type, specification and material. The most commonly used mobile screen is a tripod screen. This type of screen is placed on the ground with a tripod and supported by an intermediate rod to pull the screen up. The movable tripod has a size range of 1.2-2.4 meters, and this type of screen can be operated by only one person. The size of the screen depends on the type of media. The square screen is more compatible with all media images. The rectangular 4:3 ratio is for 16mm projectors and TV images. There are several screen materials to choose from: white, pearl and transparent rear projection. The white screen is full-faceted, opaque, and has a wide viewing angle. It is a screen that is often used in conference rooms. The viewing angle of the pearl screen is more limited, and its viewing angle is usually narrower than that of the white screen. The transparent rear projection screen is made of plastic, and its surface is covered with a special gray material to enable the image to be projected from behind the screen to be viewed from the front of the screen. This type of screen is a highly reflective screen, but its viewing angle is very narrow.
6. Projection Rack To place the projection device in the proper projection position, it must be placed on a well-designed shelf or elevator. For the rental industry, the safelock and mobile carts are the two most common basic equipment. The four feet of the safelock stand can be freely telescopically positioned with a maximum height of 142 cm. This height is a very suitable height for a single slide projector or projector. The mobile cart can accommodate more projectors up to 137 cm in height. The rent of the activity cart is usually higher than the safelock. The 81 cm high activity cart is more suitable for slide projectors, while the 137 cm high activity cart can safely withstand video monitors. Many audiovisual rental companies install baffles around the cart for aesthetic reasons. If there is no projector room design in the ballroom, the projection frame must be placed on the scaffold or platform. Regardless of where the projection frame is to be installed, attention must be paid to the technical requirements such as size, height and stability.
7. Video equipment video programs and their equipment can be classified into the following three ranges:
1. General user/home level.
2. Industrial/wireline system grade.
3. Broadcast level.
8. Audio equipment audio equipment has a considerable impact on the quality of the conference. If the conference manager can take into account the following basic aspects of audio, then the quality of the conference will be greatly improved.
9. Microphone microphone can be said to be one of the most frequently used and most important audiovisual equipment in conference activities. However, the variety of microphones and the characteristics are different. Therefore, understanding the characteristics of various microphones and the correct use method will make the meeting smoother and save unnecessary equipment rental fees. Microphones can be roughly divided into two types.
a. Wired microphone:
In short, the microphone itself is connected to a signal line. When the conference needs to record, the stability of using the wired microphone is usually higher than that of the wireless microphone. In addition, the speaker must be reminded to speak into the microphone, otherwise it may not be recorded. To or can not record the sound.
b. Wireless microphone:
On the surface, the microphone itself has only one microphone. There is no line. There are many types of microphones. The type of microphone can be selected according to the conditions of use:
1. Handheld wireless microphone: suitable for the conference process to q&a time for participants to ask questions.
2. Lapel-on or shoulder-mounted wireless microphone: For speakers who need to walk around and use their hands, they also need to wear a receiver with them. When two or more wireless microphones are used at the same time, it is necessary to use different frequencies for each speaker to be pronounced. Of course, the more the frequencies, the more serious the mutual interference occurs. Before using the microphone, we must first decide how many microphones are needed in this conference. In the conference where there are nearly 100 people in the field, at least the microphones are needed on the platform and the main desk. If the conference has two-way communication time, we must consider The microphone is placed in the auditorium, the microphone of the podium must pay attention to the height, and the head of the microphone can be rotated freely to meet the speaker of different heights. The best vertical microphone height is 1.8-3 meters, the speaker can adjust the height of the microphone head up and down. In an important meeting, it is best to prepare a "standby" microphone, otherwise the microphone will suddenly silence during the opening ceremony; the special speech or live broadcast will be a major failure of the conference. If the speaker is going to move around in the venue, then consider the "clip-on" microphone, which can be clipped to the clothes. There are a few things to consider in the discussion. Generally speaking, the chairman, the reporter, and the commentator should have a microphone. If you have a consideration, you can use a microphone for the two people. If the participant wants to ask a question, An upright microphone can be placed in the walkway of the auditorium. Wireless microphones will cause poor reception due to the dead corners of the venue and the ceiling. High-quality and stable wireless microphones usually have higher prices, not to mention the use of batteries in wireless microphones. The strength of the battery will also affect the quality of the reception. At the reception or tea party, you can use dual or multiple powerless antenna systems to receive the strongest and clearest sound quality. When using a wireless microphone, it is best to "standby" a clip-on microphone. Here is a suggestion. If you must use a wireless microphone, it is best to rent a sound company that is familiar with the venue to provide better quality service.
10. Recording If you consider the recording in a conference, you must add a microphone in the speech area or collect the sound from the sound system of the venue. If it is a full-field recording, it is relatively simple, as long as it is connected to the venue, usually the venue. This kind of assistance will be provided to minimize the noise, and the speaker will not know which microphone to use.
11. Indoor audio Most venues that meet the conference standards have an indoor sound system. Before you decide whether to use the sound system, you must feel it yourself, even if the effect is very good, but before the meeting. It is best to check it again once a day. When you decide to use the sound of the conference itself, and the conference room you are using is just one of the separate conference rooms, then you must decide whether each has an independent sound system, and the first-class conference venue will pay special attention to it. Separate the soundproofing of the conference room to provide the best meeting venue.
12. The position of the loudspeakers in the front of the conference room is louder than in the first few rows or the rear. If you still have doubts about the sound system of the venue itself, I suggest you find another reputable audio company to assist. Sound arrangement is also a key factor for a successful meeting.

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