Hainan Broadcasting System, Haikou Public Broadcasting Installation, Wanning Broadcasting

Hainan Lianshengda Technology Development Co., Ltd. is a high-tech company that specializes in undertaking network cabling, security engineering, Wujinjiaodian, monitoring installation and maintenance and other monitoring systems from security monitoring and public broadcasting systems. It is a high-tech company integrating scientific research, design, production, sales and system integration. enterprise. The company adheres to the philosophy of developing with integrity and surviving with credibility. The company has a group of construction teams with rich management experience and strong capabilities.
Public broadcasting equipment can be divided into the following categories according to the transmission signal processing method
Traditional public broadcasting equipment Traditional public broadcasting equipment transmits analog power signals to terminal speakers through audio cables, using the power amplifier in the computer room to The loudspeaker uses high-level transmission, usually or. Its advantage is that the line loss is small and the load is easy to connect. Just connect the loudspeaker with a step-down transformer to the line.
Digital Addressable Public Broadcasting Equipment The true meaning of digital addressable public broadcasting system is that its audio signal control signals and communication are all carried out in the digital domain, with longer transmission distance and better transmission effect, especially Concentrating audio signals and control signals on a two-core twisted pair line not only greatly saves installation and wiring costs, but also provides prerequisites for future system maintenance and high reliability of system operation.
Streaming Media Intelligent Digital Broadcasting Streaming Media Intelligent Digital Broadcasting is a purely digital network audio broadcasting system based on the Internet and LAN. It is different from the traditional analog audio FM addressing and CNC broadcasting broadcast systems. The streaming media intelligent digital broadcasting system is completely Compatible with current Internet and LAN applications/protocols, no additional wiring is required. Existing campus networks or internal LAN embedded hardware terminals can be used. Independent addresses can be set. Through multi-layer switches, each host can be controlled arbitrarily. Terminal settings and playback, you can also select the required program content on the terminal. Due to the use of computer technology, the system is compatible with almost all audio formats. Using technology, there can be no restrictions on the program content played, and each terminal can do whatever it wants. Play the required program content. It can completely replace the traditional intelligent broadcasting system based on analog or digital, truly realize the audio broadcast function based on the Internet or LAN, support broadcast live broadcast and on-demand and other methods, and support a wide range of popular applications.
Public broadcasting equipment can be divided into the following categories according to the place of use
Outdoor broadcasting system Outdoor broadcasting system is mainly used in stadiums, stations, parks, art squares, music fountains, etc. It is characterized by a large service area and spacious space. The background noise is loud and the direct sound is mainly transmitted. The required sound pressure level is high. If there are reflective objects such as high-rise buildings around and the speaker layout is not reasonable, the sound wave will be reflected multiple times and cause a delay exceeding the above, which will cause double sound or Multiple sounds, in severe cases, will cause echo and other problems, affecting the clarity and sound image localization of the sound. The acoustics of outdoor systems are also affected by climate conditions, wind direction and environmental interference.
Indoor broadcasting system Indoor broadcasting system is the most widely used system, including various theaters, stadiums, dance halls, etc. It is highly professional and can be used for both non-verbal sound amplification and various theatrical performances. It has very high requirements for sound quality. System design must not only consider electroacoustic technical issues, but also involve architectural acoustics issues. Factors such as the shape of the room have a greater impact on sound quality.
Classification of Public Broadcasting Functions and Properties
Business Broadcasting System
Office buildings, commercial office buildings, schools, hospitals, railway passenger stations, airports, banks, factories and other buildings are equipped with business broadcasting to meet the needs of business and administrative management. Mainly business broadcast requirements.
Service broadcasting system
Hotels, shopping malls, entertainment facilities and large public event venues are equipped with service broadcasting. The scope of service broadcasting is background music and guest room program broadcasting. The purpose is to provide people with appreciation music broadcasting programs. , with service as the main purpose, service broadcast programs such as halls are generally selected. The content arrangement of radio programs should be determined according to the service objects and project level.
Disaster accident broadcast system
It is mainly used when a fire occurs. Firefighters in the fire control room use fire accident broadcasts to guide people to quickly evacuate dangerous places.
Conference system
With the increase in domestic and international exchanges, telephone conferences, video conferences and digital conference systems have developed rapidly. Conference systems are widely used in conference centers, hotel groups and government agencies. The conference system includes the conference discussion system, voting system, simultaneous interpretation system and video conference system, which requires synchronization of audio and video image systems, and all uses computers to control and store conference data.
Functional system
The public address system is widely used in stations, airports, hotels, commercial buildings, hospitals and various buildings to provide background music and radio programs. In recent years, the public address system also serves as emergency broadcast. Its main uses are business promotion and current affairs policy broadcasting background music and broadcasting public paging emergency broadcasts for fire accidents and emergencies.
Today's public broadcasting integrates background music, publicity paging broadcasts and emergency broadcasts for fire accidents. This is a very versatile broadcasting system. This universal public broadcasting system must have the following functions and technical requirements
Play background music and play paging
The abbreviation of background music, its function is Mask ambient noise in public places and create a relaxing and enjoyable atmosphere. The average sound pressure of background music is around .
When paging broadcasts are played in the background music, there should be a ding-dong or bell sound to alert the public.
Emergency Broadcasting
In the past, the emergency broadcasting system was combined with the fire alarm system as an independent system. However, it was later discovered that the reliability of the emergency broadcasting system was greatly problematic due to its long-term use. There was usually no problem during normal testing, but It became mute when it was officially used, so the fire alarm system and the background music system were integrated to form a highly versatile public address system.
Priority broadcast right function
When a fire occurs, the fire broadcast signal has the highest priority broadcast right, that is, the fire broadcast signal can be used to automatically interrupt background music and paging to find people.
Constituency broadcast function
When a fire alarm occurs in the building, in order to prevent chaos, the system will only broadcast to the fire area and its adjacent areas to direct evacuation and organize rescue and other matters. This selection function should have two types: automatic selection and manual selection to ensure reliable execution of instructions.
Forced switching function
When playing background music, the input status of each speaker load is usually different, and some are in a low volume state. Some are turned off, but during emergency broadcasts, the input status of each speaker will be converted to the maximum full volume state, that is, the volume is forced to switch through remote control commands.
The fire duty room must have an emergency broadcast console. This sub-console should be able to remotely turn on and off the public address system. The sub-console microphone has priority playback rights, and the sub-controller has strong switching rights and constituency broadcast rights, etc.
Public broadcasting has complete functions and is widely used. It is worth choosing. Liansheng Technology looks forward to your arrival!
Contact number Ms. Wang
Company name Haikou Lianshengda Technology Development Co., Ltd.
Company address Unit Room, Huilong Plaza, Longkun South Road, Qiongshan District, Haikou City