Stereo sound garden lawn area Zhengzhou Monopoly

Stereo sound garden lawn area Zhengzhou, Henan Monopoly Monopoly cell broadcast equipment, professional broadcast equipment wholesale Henan Tel: 130 07525005 www.69139139.com cell lawn garden stereo audio Zhengzhou public broadcasting monopoly with market demand, there have been different from the traditional broadcasting system Some broadcast systems. They generally move in two directions, one direction is an improvement over the traditional broadcasting system, such as the control system to integrate, to make it a more humane; or the line topology into a bus from the star-shaped, by This simplifies the wiring structure, and so on. Another direction of development is to omit the traditional public broadcasting in line very troublesome. Next, several common categories of public broadcasting as a profile. The so-called intelligent computerized intelligent means, in fact, requires the entire public broadcasting system overall under Computer Management. In recent years, many aspects of conventional public broadcasting system has are included in the computer management, mainly using SCM management. But until the end of the century, the whole broadcasting system overall product placed under Computer Management basically has not yet appeared. Since 2000, public broadcasting systems of various computer management was only put on the market. The vast majority of intelligent public broadcasting system is the system under a common management of the PC, the keyboard 1 common control. Other aspects of the system are still routine, just add a computer interface. On the market, the latest intelligent public broadcasting system more professional, usually by a dedicated virtual host system in all aspects except for the power amplifier (including audio broadcast link), followed by a controlled directly on the host screen. Henan cell broadcast equipment monopoly, Henan professional broadcast equipment wholesale network network refers to the traditional public broadcasting network into a data network. In the traditional public broadcasting system, the information is transmitted by analog power signal, control equipment is centralized in the room. Network broadcast address at least the following three questions the traditional public broadcasting system: 1) power transmission line not only requires a large line cross-section, and not easy to achieve multi-channel transmission (not easy to achieve line multiplexing). 2) Analog signals are not easy to achieve more control, not easy to achieve the interaction between the individual terminal. 3) requires the establishment of a modern intelligent building internal data network, video network audio network. Public broadcasting is a major part of the audio network, if to be digitized, will be able to achieve the triple play. Wireless transmission cell lawn garden sound stereo Zhengzhou monopoly over the broadcasting stations now are basically using a wireless FM radio terminal (radio) voluntary purchase by the user, by the user to select the station to listen to your liking. Wireless FM radio station instead of the rural basic cable broadcast before. Using FM public radio and FM radio stations similar to the above. The difference is that the coverage of small wireless FM public radio broadcasting systems, including broadcast terminals purchased by the project Party, set up and maintain. Wireless FM public radio has quite outstanding advantages: no wiring, building design without prior planning, investment costs are low, the construction of very fast, the sound quality is relatively good, can broadcast multiple programs, easy to maintain, not the number of broadcast terminal and restricted. But it has a fatal flaw: poor reliability. Specific features: 1, with the terrain, the weather, changes of the radio waves and other factors, the received signal is unstable, resulting in the sound emitted by the terminal when the strong weak, good times and bad, and you may receive the radio should not receive the ; 2, the control signal wireless FM public broadcasting is one-way, broadcast terminals often do not listen to the command, such as mistakenly startup, shutdown; 3, each terminal has a complex circuit, reliability greatly reduced; 4, secrecy is almost zero. In addition to the disadvantage of poor reliability, the frequency control has become the bottleneck of wireless FM public radio market. Now almost all public broadcasting radio FM frequency phase-locked loop with a quartz crystal oscillator, SAW filter, control signal error correction coding scanning technology, the stability has been some improvement, but has been unable to resolve reliability issues, readers If there is a business claiming reliability heard absolutely no problem, do not the whole letter. Henan cell broadcast equipment monopoly, Henan professional broadcast equipment wholesale transmission cable television network cable television network transmission based on merit-based broadcast system is usually can transmit dozens of sets of programs on a single coaxial cable, you can use the existing cable television cable as carriers. If the broadcast area cable system as it exists, may consider the use of cable television networks to establish a public broadcasting. Since the electromagnetic environment inside than coaxial air is good, so reliability is also far more reliable wireless public address system. But compared to the traditional public broadcasting system, its reliability and poor, because it's broadcast terminals is very complex, and the need to take power at the terminal site and further hampered the reliability of the grid. Addressable control and intelligent addressable broadcast system broadcasting system, are based on the traditional cable broadcast of an improved system. Wiring structure of a conventional cable broadcasting is usually a star (radial) and addressable broadcast system bus wiring structure into shape (trunk type), make circuit design, construction, management and so greatly simplified. Control real addressable broadcasting system is interactive, broadcast terminal is passive containment from power. Any one of the broadcast terminal if not normal, the broadcast room immediately notified. So its reliability is very high, and then make the maintenance work has become very easy. Wireless broadcasting system, although operating mode is coded according to data address-based access to cable television broadcasting transmission system, but because they are one-way control, radio host broadcasting terminal does not answer, strictly speaking, they can not be called addressable type. Stereo sound garden lawn area Zhengzhou Monopoly Wang thunder 130 07525005 www.69139139.com