Conference Room Solutions (I)
I. System Overview
With the continuous development of electronic information technology, digital video technology is also gradually maturing, and will rapidly change our lives, with the development of Internet broadband technology, digital video technology has been integrated into the videoconferencing, remote medical care, remote education, With the development of Internet broadband technology, digital video technology has been integrated into video conferencing, telemedicine, tele-education, tele-monitoring, streaming media technology, and many other aspects, and serves all walks of life, so digital video technology is undoubtedly a new point of economic growth for the present.
Second, the user needs
The entire system to efficiently complete the task of teaching, combined with the various systems, give full play to the functions of each system, to complete the intelligent video conferencing.
(a) Multimedia display system:
Multimedia display system consists of high-brightness, high-resolution LCD projector and motorized screen; to complete a variety of graphic information on the large screen display.
(B) A/V system:
A/V system consists of computers, DVDs, VCRs (video recorders), physical booths, remote video conferencing systems, amplifiers, speakers, digital hard disk recorders and other A/V equipment; to complete the playback of a variety of graphic information (including the use of a variety of softwares, DVD/CD disks, video cassettes, a variety of physical objects, sound) function; Realize the multifunctional hall on-site sound amplification, broadcasting, with the large screen projection system, to provide excellent audio-visual effects. And through the digital hard disk recorder, can record the whole process in the hard disk recorder, convenient for future inquiries, review, etc..
(C) Conference room environment system:
Conference room environment system consists of room lighting (including incandescent lamps, fluorescent lamps), curtains and other equipment; to complete the entire conference room environment, the atmosphere of the change to automatically adapt to the current needs; for example, when playing a DVD, the lights will automatically be dimmed, the curtains automatically closed.
(d) Intelligent multimedia central control system:
Adopting the central control system with the highest grade, the most mature technology, the most complete functions and the widest range of uses in China at present. Realize the centralized control of all kinds of electronic equipment in multi-functional conference rooms.
Requirements for simple, user-friendly, intelligent operation;
Requirements for high reliability of the entire system;
To achieve a high degree of automation 'intelligent control, minimize the complexity of the operator's operations, to achieve the "one key in place" type of control;
As much as possible, reflecting the excellent functionality of the various devices, so that all the equipment to work in the best state, to give full play to the maximum efficacy of the equipment.
Able to control the projector, on/off, input switching and other functions, and can control the motorized hanger, screen, to achieve the rise, stop, down and other functions;
Able to control the DVD, VCR playback, stop, pause and other functions;
Able to control the physical booth zoom in, zoom out, etc.;
Able to control the sound volume and the sound level, to achieve a "one-click" type of control;
Able to control the sound level, to realize the "one-click" type of control;
Able to control the volume, the volume size adjustment function;
Able to realize the audio and video signals, VGA signals, automatic switching control function;
Able to control the conference room lighting and curtains, automatically adapt to the current needs;
Conference room program (2)
First, the conference room Environment Description
Multimedia conference room about 220 square meters, 16 meters × 14 meters.
Second, the conference room function description
Multimedia conference room to achieve the main functions: meetings, taking into account the lecture, international academic exchanges and other activities, but also some of the English conference film learning.
Third, the conference room sound, video effects required to explain
Multimedia conference room sound effects: multimedia conference room is mainly for the transmission of language vocal signals taking into account other audio-visual data audio signal playback, in the design of the distribution of key considerations as well as the distribution of speakers and sound pressure coverage of the uniformity of the system signals to deal with the interferences between each other. To achieve a variety of audio signals playback is clear and not turbid, and high school and low sound field is clear. According to the national hall sound reinforcement system design acoustic characteristics of the index standard, in the empty field steady state quasi-peak state of the maximum sound pressure level:
1. language sound reinforcement system first-class standard to be ≥ 90dB
2. music and language sound reinforcement system first-class standard to be reached ≥ 95dB
3. unevenness of the acoustic field to do when the measurement of 1.0kHz and 4.0kHz ≤8dB
4. the average value of the sound transmission gain in 0.125-4.0kHz should be ≥-8dB.
The above is the national standard, the system of this project is designed in accordance with the standard, and also to meet the above standards. Sound effects in line with the above GYJ125 hall sound reinforcement system design acoustic characteristics of indicators in the language and music both first-class standard, to achieve a clear language, no distortion, sound pressure margin is sufficient, the sound field distribution is uniform, no acoustic feedback whistling.
Video effect description: clear text and picture.
Fourth, the multimedia conference room design
Multimedia conference room is a modern conference facilities. The system contains the means of multimedia conferencing, computer-assisted conferencing and demonstration, able to play a variety of currently popular media, should be currently popular, easy to use, the effect of the ideal conference presentation system for a variety of multimedia conferences, presentations, academic exchanges, and learning activities such as the English conference film.
Multimedia conference room to achieve two main functions: one is the meeting, international academic exchanges and conferences and other activities; one is to carry out the learning of English conference film. In the function of the meeting, the system contains a multimedia conference, computer-assisted meetings and demonstration of the means, it will be discussed system, tape recorders, DVD players, multimedia computers, video physical booths, cable TV programs, the Internet and other currently popular various media programs through the projector and high-fidelity audio equipment, show to the audience. Make the content of the meeting vivid, visualization and concretization, the system fully embodies the role of modern multimedia conference room equipment to improve the quality of the meeting. Multimedia conference room area of about 220 square meters. () multimedia conference room using the U.S. VICISI 6 12-inch speakers on both sides of the podium wall, VICISI full range coaxial loudspeaker system, in addition to having the ability to project far away from the smooth power response and the quality of the sound can also make it well adapted to the work of the near field. Its sensitivity of 98dB, rated input power SPL has 96dB, its horizontal radiation angle of 80 degrees, vertical radiation angle of 40 degrees, each side of the two fan form distribution, easy to cover the whole field. Because of its point source technology, good directivity, the chance of acoustic feedback is also very small.
The main features of the conference discussion system: conference system host can be installed directly on the 19-inch standard rack; conference chairman machine and on behalf of the machine comes with a connecting cable, using hand-holding cable connection; gooseneck conference microphone; double headset socket, the chairman of the priority, speaking LED instructions; series of 9-bit speaking unit, whistling suppression, microphone automatic shutdown; auxiliary audio signal input and output function, easy to connect other equipment; can be connected to the audio signal input and output function, easy to connect to other equipment; can be connected to the audio signal input and output function. Function, easy to connect to other equipment; access to teleconferencing; chairman unit can be used to control the priority button to control the speaking order, control the atmosphere of the meeting, while the speaking seat can be selected 1, 3, 6; with a recording output (output amplitude can be adjusted) connected to the recorder function, but also external audio amplification equipment; on behalf of the chairman of the microphone volume can be adjusted to adjust the size of the sound, control the sound pressure of the scene; on behalf and Chairman of the unit is equipped with a speaker volume control, easy to adjust the speaker volume of various units; host unit has a microphone input port, and the amplitude can be adjusted, can be connected to the wired microphone and wireless microphone.
Video system: large screen is the first choice, the current feasible program more projectors, more in line with the current situation. In the multimedia conference that the bigger the better the projection screen, but due to the limitations of the height of the room, the size of the projector screen can only be the height of the room in the location of the conference table. The height of the lower edge of the screen can not be in the end, otherwise the speaker will block the screen. Generally 1.2 meters high, that is, room height minus 1.2 meters is the height of the screen. In fact, the upper edge of the screen is impossible to stick to the roof, the screen box, projector hangers and so on still need some height, about a few dozen centimeters. The optimal viewing distance is roughly 4-6 times the height of the screen, equivalent to 2.4-3.6 times the diagonal length of the screen. In the design of the multimedia conference room should take full account of the number of people and the relationship between the height of the room.
Multimedia conference room is different from the general multimedia classroom, first of all, the equipment used are high-grade, complex. To make the equipment to play the best performance, which requires specialized professionals to operate. In the actual meeting, the meeting people as long as the operation of computers and other simple equipment can be. Most of the multimedia conference tables on the podium are movable and movable. In the appropriate location of the podium on the floor to install a reversible junction box. Use it when you need to access equipment such as microphones, video presenters and laptops. Normally, multimedia equipment is placed in the equipment room on the right. In the multimedia conference room meeting can use multiple wired or wireless microphone, and the use of imported high-grade feedback suppressor, microphone in any place will not produce whistling.