IP network public broadcasting system key middle school application case
- Time of issue:2018-08-08 00:00
IP network public broadcasting system key middle school application case
- Time of issue:2018-08-08 00:00
The design of the public broadcasting system should consider the requirements of the overall construction of the campus, and meet the background music of the campus, the campus notice, the ringtones of the school, the music broadcast of the sports meeting, the national anthem broadcast of the flag-raising ceremony, the speech under the national flag, the English listening broadcast in the grading department of the classroom, College entrance examination English listening broadcast and other functions.
First, the school overview
A key middle school consists of two teaching buildings, four dormitory buildings, an administrative office building, a science and technology library, eight basketball courts, two canteens, and a track and field stadium.
System design should consider two aspects: computer network system, public address system. The system should fully consider the possibility of future network structure changes, expansion and the development of new technologies to achieve smooth transition.
Authorized users can use the sub-control software to broadcast and set the broadcast terminals that they are allowed to operate on any computer; advanced users can arbitrarily set and broadcast all broadcast terminals (up to 1000) in the system; The broadcast audio stream must be no less than 15; the sub-control terminal must be able to broadcast the local microphone and line input signals, and must be able to operate each terminal to play audio signals or audio files on the total server. Support all terminals to automatically play the upper and lower class ringtones.
Traditional broadcasting, audio or frequency modulation is commonly used. Audio broadcasting is affected by factors such as voltage, power, and impedance. The transmission distance is short, the frequency is low, and it is susceptible to interference, and the system has poor scalability. FM broadcasting introduces noise into the modem, and device aging and frequency offset can also cause signal distortion. It is required to have fire linkage alarms N±1, N±2, N±3, N±4, N±5, adjacent layer alarm mode, partitionable paging, and can broadcast regular broadcasts (such as ringing bells, etc.); Timing fixed point program playback. For the background music system with a volume controller on the terminal, when playing background music, the listener can choose the volume and switch of the volume. When there is an alarm signal input, the speaker should not be controlled by the sound control. The maximum volume is broadcast, and the alarm only plays the background music in the relevant adjacent area.
The digital IP network broadcasting system adopts the widely used TCP/IP network technology in the world, and transmits audio signals in the form of IP packet protocol on the local area network and the wide area network, completely solving the poor sound quality of the traditional broadcasting system, and maintaining and managing the interaction and interaction. Poor performance and other issues. The system equipment is simple to use, easy to install and expand, and only needs to connect the digital broadcasting terminal to the computer network to form a powerful digital broadcasting system.
■High reliability and high confidentiality
Due to the digital transmission signal, the system is not limited by power, and the reliability and stability are extremely high, and the flexibility is extremely strong. The entire transmission data is transmitted by the network cable using the unique coding technology, which effectively prevents the leakage of the signal.
Each terminal can be independently controlled to play different sounds. Not only can it fully realize the basic functions of traditional broadcasting system, such as background music, timed ringing, zone play, broadcast paging, fire alarm and other basic requirements, but also has functions such as audio free on demand and remote task management.
■ Sound quality stereo:
At the stereo and CD levels, background music and leadership speech are no longer ambiguous. Especially suitable for daily foreign language listening and listening training in the classroom, each pronunciation can be clearly distinguished. Especially in the middle school entrance examination, college entrance examination, college four or six listening play, can effectively improve the quality of the test.
■ Radiating all functions of the traditional broadcasting system
Including automatic ringing, background music playback, leadership speech, broadcast notifications, and relay radio programs, etc.
■The system is based on IP network and complies with TCP/IP protocol.
Multi-purpose, multi-use, fully use network resources, avoid repeating lines, Ethernet interface can be connected to the digital broadcast terminal, truly realize the multi-network integration of broadcasting and computer networks.
■Leader online speech
Leaders can use any computer on the campus network to connect to the microphone, which can realize broadcast speech, can specify all broadcasts or partial broadcasts, and support remote broadcast through INTERNET.
■Free on demand
The remote broadcast control of the digital broadcast terminal of each broadcast terminal completes any on-demand database in the audio server. The operation is simple and convenient. Campus radio can completely abandon the teaching methods of foreign language classes with tape recorders to the classroom. Teachers only need to use the remote control to select the corresponding course content, click play! There is no need to rewind, change faces, etc. to cumbersome operations.
■ Real-time broadcast
The external audio (cassette, CD, radio, microphone, etc.) Shenzhen public address server is compressed into high-quality data stream in real time, and the broadcast data is sent through the network. The digital broadcast terminal installed in different broadcast terminals can receive and receive the speaker in real time. Play it.
■ Independent IP terminal and timed broadcast
The digital broadcast terminal has an independent IP address, and can individually receive the personalized timed broadcast program of the server. In the campus radio, the teachers will use the textbooks or courseware to be stored on the server hard disk, and use special software to compile the playing plan. The system will automatically broadcast the task according to the task.
The system can set any number of groups to play the developed audio program, or broadcast the speech to any designated area; the service software can remotely control the playing content and volume of the sensitive station terminal, etc.
■Classroom audio amplification
Digital broadcast final carbonyl provides audio input. When there is no broadcast signal, the audio output of the pedagogy computer can be connected to the voice terminal and broadcasted by sound reinforcement. The terminal can automatically switch the power of the amplifier speaker according to the presence or absence of the voice signal.
■Alarm intrusion broadcast
One way alarm is forced to insert, and once the external line alarm signal is alarmed, it can automatically trigger the whole system to start and access the alarm broadcast without artificial operation. The system can access fire alarm signals to achieve fire linkage and support adjacent layer alarms. The final carbonyl belt has a strong cutting function and can control the three-wire sound controller.
■ Terminal built-in switch
The digital broadcasting terminal can effectively solve the problem that the terminal occupies the original network port, and can also properly connect one or two terminals in series, thereby saving wiring investment.
■Remote playback control
It can address the program and volume of the point control terminal, and can remotely maintain and manage, remotely arrange courseware and lead remote speech.
■Peer-to-peer paging broadcast
The broadcast server side and the sub-control station can use the microphone to perform single-point, group, and whole-area paging speech broadcasts to the broadcast terminal through the sound card.
■ Remote remote control on demand:
Through the wireless broadcast controller, the real-time operation of the teacher's classroom teaching is completed, and functions such as on-demand and broadcast control are provided. The timed playback content can be set directly on the broadcast controller. It can play MP3 songs and courseware in servers, workstations and network stations and networks; can play network radio programs and play the teaching resources of the Internet; use audio cards to broadcast audio cassettes, tuner, CD player, microphone and other analog audio signals in real time. .
Fourth, the advantages of IP network broadcasting
1. Unique two-way on-demand: The system has two-way point-to-point music, which can play interactive music on the host's music, which can bring unprecedented new technology enjoyment to users, especially suitable for campus broadcasting, playing foreign languages, Interactive point play.
2, sound quality: to achieve stereo and CD level, background music and leadership speech is no longer ambiguous. Especially suitable for daily foreign language listening training in the classroom, each pronunciation can be clearly distinguished. Especially in the middle school entrance examination, college entrance examination, college level four or six listening play, you can effectively improve the quality of the test, you can hear each tone.
3, free of auxiliary lines: one-line multi-purpose, full use of network resources, to avoid repeated erection of lines, where there is an Ethernet interface can be connected to the digital broadcast terminal, truly realize the multi-network integration of broadcasting and computer networks.
4. Rich broadcast content: The IP network broadcasting system breaks the limitation of the traditional one-source source, can realize the two-way multi-tone source program playback, achieves the two-way broadcast effect, and can increase the terminal to reach 1000 points, which can reach each point. Different program sources.
5, powerful network remote sub-control The sub-control workstation is authorized to control the system, to achieve insertion, paging, online speech, voice listening teaching and exams. Adapt to complex network environments. The number of terminals is unlimited, IP can be freely set, cross-gateway and routing, penetrate VPN and NAT, adapt to VLAN and metropolitan area network, wide area network.
6. Remote paging The remote paging function can be realized. The leader can speak to the terminal in the office, can page to each point, and can send notifications quickly and conveniently. Remote voice teaching and other functions.
7. Maintenance Easy to maintain the structure, free from virus infection, high stability, simple engineering, easy to expand, easy to operate, and intuitive display.
8. Multi-source simultaneous transmission It can transmit 16 sets of audio sources at the same time. You can manually select the terminal server to play any audio source, or you can force the terminal server to play a certain audio source through the network host. Two-way control can be controlled in the computer room or in the terminal. Different terminals can play different music.
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