Public broadcasting Engineering across the vast land of China, its size is the first in the world. As early as in the reform and opening up, the public broadcasting system is widespread in our vast number of towns and countryside. Whether in offices, schools, businesses, or forces, hardly a unit not broadcast room; in rural areas, there is almost every household as broadcasting Terminal "ice". This is education and organization with the masses, and mobilize the masses, publication of the Decree has played a significant role. Since reform and opening up, due to the economic development and technological progress, pass information to many modern channel of the public broadcasting for the release of General news and features, the Decree has been gradually fades (particularly in urban areas). Centralized, uniform, and the pursuit of common public broadcasting network, gradually for personalized, diverse and multi-functional replaced by separate systems. However, each new or old units need to have their own public broadcasting system this pattern has not changed, because it is still a variety of organizations and entities to implement centralized and unified leadership and centralized and unified management of important tools.
As China's urbanization of accelerated development and building new Socialist countryside background, public broadcasting engineering requirements and demand continues to increase. However, public broadcasting Engineering installation, commissioning and acceptance is still missing a relevant standard and basis. To this end, the establishment of public broadcasting systems engineering technical specifications of necessity and urgency are obvious.
1, public broadcasting technology progress quickly
Public broadcasting and the traditional sense of the term "broadcasting". English translation of the public broadcasting as a Public Address instead of Broadcasting. Public broadcasting only to a limited extent publish internal information, publication and rest signal, provides the background music and paging and been forced into public emergencies emergency broadcast (Emergency Announcing) and so on. In market operations, public broadcasting Engineering often is "intelligent building weak electricity system integration". Public broadcasting engineering involves major equipment including: broadcast equipment, cables, speakers. Broadcasting equipment: preamplifier, power amplifier, fire control, interface, sources and intelligent control host, and so on. Now increases network, optical, digital has become a trend. 80 's previous works of public broadcasting in China is relatively simple, and generally consists of a combined power amplifier and speakers. In the late 1990s, as the country many group dead injury of large fires and the emergence of various intelligent building, the State requires all public places, you must install the disastrous broadcasting system. Today, the public broadcasting system has been developed to intelligent, networked, functional requirements for transmission distance, interactive networking-control, regular radio, fire fighting, also requires high reliability, good speech intelligibility.
Recently, the broadcasting system, and users have made a number of personalized requirements. In General, can be categorized into the following categories: 1) multistreaming playback, including a variety of programs, multiple play modes; 2) terminal independent, each terminal can choose their own programmes; 3) transmission diversity for simplified wiring; 4) digital, multi-network. To the LAN and the Internet as the transport medium for broadcasting system is a trend. 5) operation simple, friendly interface.
2. public broadcasting Engineering market size, market and user calling standard
Public broadcasting Engineering market is very large, nearly all public places require that public broadcasting system. The most typical applications include: School (contains almost all types of schools), business venues (such as supermarkets, commercial Plaza), outdoor public square, factory, tourist attractions, a large office building, residential quarter, Airport Station Pier, and so on. According to the place of size and broadcast feature requires that public broadcasting engineering cost from tens to tens. For example, a coffee shop in the broadcasting system cost about 2 ~ 10 million, a general secondary schools for broadcasting system cost $ 20 to $ 1 million, a mid-sized University broadcast system cost about 50 ~ 200 million, and the Guangzhou University City broadcasting system cost up to three thousand million, Beijing Capital Airport is up to 5 000 000. China city so dense, large population, public broadcasting application range is extensive, visible public broadcasting Engineering market is very large. The new rural construction pace has accelerated, the renewal of the broadcasting system in rural areas have been expanded. China has the vast rural areas, rural broadcasting system update is a huge project. With the renewal of the broadcasting system in rural areas, public broadcasting Engineering will also usher in a huge couldn't estimating market.
According to some professional media statistics estimate that public broadcasting manufacturers up to 200, involved in the production of thousands of manufacturers, engineering quantity exceeds 2 000 users millions of households. This is no country in the world can be compared. As a sound engineering, public broadcasting system than the "Theater/auditorium sound reinforcement system" is more important and more generally. But so far, we haven't seen one for public broadcast dedicated national standard, nor to see international standards. In fact, public radio international presence is far better than its domestic exist important, so we don't see the corresponding international standard is not surprising. Although there are some available to reference and refer to the standard, but since there is no uniform application specific standard, the current domestic public broadcasting engineering design, construction and acceptance are more disordered.
3, public broadcasting Engineering market specification, engineering, and quality supervision departments calling standard
Any industry has a certain development law, since the beginning of chaos, silo, industry development necessarily gets narrower. Public broadcasting Engineering also follows the same rules, after nearly 20 years after the random development, industry also urgently want to launch the corresponding norms and standards. The current Government departments on public broadcasting Engineering test not according to follow, this easy to make some unscrupulous traders in the market have an opportunity to confuse you. At the same time because it may be, in the event of a dispute, it is very difficult to carry out arbitration, thus on the market so much damage. Unified standard, you can significantly reduce the inconsistencyAnd waste, increase the project's communication with customers. In the absence of national standards, contractors and customers in the project it is easy for differences, raises no contradictions and waste, and based on common national standards to communication, such problems would be greatly reduced.
4, standardized quality management, public broadcasting production enterprises need standards guide
At present, China's production of public broadcasting companies over one thousand, has led the public broadcasting products for rapid development. But because of the lack of uniform standards, these enterprises in production and in siloed projects. According to its own enterprise product law, technology, equipment and personnel conditions for production and installation of public broadcasting system. Because of the low barriers to entry in the industry, resulting in quality. Plus there is no standardized technical conditions and specifications for engineering conduct guidance, it is very difficult to achieve standardization, data of the scientific production and management, and thus prone to low levels of competition.
5. break down the barriers to foreign technology, establish their own intellectual property rights, must have their own standards
At present the domestic public broadcasting Engineering competition is very fierce. Many foreign brands have tried to use their own product structure to return to the van, they market through various channels, with the help of their ideas about many large-scale project tender book establishment, even does not fully conform to the needs of public broadcasting, the high price of professional audio products to occupy public broadcasting market. Once their ideas and the only "international brand" is recognized as a fashion and will inevitably lead to domestic enterprises very passive. At present, the high-end market almost monopolized by a small number of foreign brands, local brand only individual brand to compete with it reluctantly. If the past international brands with the obvious advantage of technical quality, today there is no such problem. This situation causes mainly consumer attitudes. Since public broadcasting was no recognized standards, in some places just recognition of the so-called "international brand". In fact, the domestic public broadcasting products and technical ideas more in line with local needs.
The current international developed and many developing countries, in order to protect its business interests that have come through the technical barriers blocking restrictions in other countries of the products in their sales. At the same time, to a large number of products sold to China, the Chinese products have to comply with their standards. China's accession to the WTO, if we want to participate in domestic and international market competition, the development of effective national standards to protect the interests of the major domestic manufacturers. Standards established to build China's public broadcasting product brand, will China products to the world. Chinese exports, the faster the more has been understanding and acceptance of foreign countries, through the development of national standards to help national enterprise brand for the company to enter the international market.
At present, the electronics are joint public broadcast industry's leading manufacturers, contractors and academic organizations in the formulation of public broadcasting Engineering national standards. We are very much looking forward to the "standard" as soon as possible!
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