Things to pay attention to when purchasing a school public address system

[Audio Network Information] There are many kinds of products for the public public broadcasting system in the past. The price and function are also very different. Users often don't know what to buy when they purchase. In which way should they start thinking about choosing smart broadcasting products? Here, we provide customers with a thought based on our long-term experience in communicating with customers. We hope that customers can choose products that meet the broadcasting needs of our school and have high performance and price ratio according to this thought.

First of all, we must understand that the school is a public place. The public broadcasting system we want to establish is first of all a public public broadcasting system. I mentioned earlier that the public public broadcasting system has three ways to complete the fixed-pressure broadcasting, digital broadcasting, and FM broadcasting, so the first We must decide which broadcasting method to use based on the nature of the school itself, the existing broadcasting needs and investment situation:

Constant pressure broadcast constant pressure broadcast----all schools and enterprises and public places can be used, such as shopping malls, supermarkets, airports, stations, etc., schools mainly in classrooms, playgrounds, canteens, libraries, dormitories, corridors, campuses, etc. A constant pressure public address system is used.

Digital Broadcasting Digital Broadcasting---Based on campus network broadcasting, there are still few adopted. Some schools have added this part of the function when setting up the campus network. However, as a basic equipment of the school, it seems that the cost is too high due to broadcasting. The receiving end is an embedded system or a PC terminal that outputs audio signals to the speakers. At the same time, it is used for music ringing and timing playing. The stability requirements for the network and the terminal are also high. If the network or the terminal presents a problem, it cannot be normally put on the screen. After the class bell, the teaching order of the school will be disordered. Then there will be digital broadcasting for timed playing, music ringing, and the PC terminal or embedded computer at the receiving end must be always open, or started within a few seconds, otherwise it can not be timed. Play. Therefore, the digital broadcasting system is preferably used as a supplementary public broadcasting system for schools, mainly for voice teaching or IOD on demand.

FM radio FM broadcasting----mainly used for places where you need to listen to different programs, such as classrooms, hotel rooms, hospital wards, etc. The school mainly uses FM public broadcasting system in the classroom, in order to meet the needs of listening exercises and exams, such as In the early self-study time, the first, second and third grades are all stopping the English listening exercise, and the grades of each grade need to listen to the listening exercise content related to the grade level course. At present, most of the FM radio broadcast methods are junior high school and high school, and the listening channel is more than three to ten.

After selecting the broadcasting method, it is necessary to affirm the needs of the intelligent broadcasting to be arrived according to the theoretical situation of the school, and then select the intelligent broadcasting products. First, the broadcasting is intelligent. The broadcasting automatic broadcasting system should be all schools newly built and Must be selected when transforming the public address system. Because music ringtones, timed broadcasts, and unattended are the functions that must be reached by various school public address systems, otherwise it is not called the intelligent public address system. Here we have to choose a single The road is also a multi-channel automatic broadcast system. The multi-channel broadcast automatic broadcast system is mostly used in the FM public address system. Since the FM public broadcast system can broadcast multiple sets of programs, the multi-channel broadcast automatic broadcast system can simultaneously output 2-12. The digital audio source of the road often requires the public broadcasting system to simultaneously broadcast multiple sets of digital audio files in the English listening test and exercise. In the constant pressure broadcast, if each zone uses different power amplifiers, and each zone needs independent broadcast programs automatically. Source, also requires multi-channel broadcast automatic broadcast system, such as the primary and secondary school needs are independent Ringing system

The next step is to choose the intelligent control method of public broadcasting system, partition control or addressable control. Most of the school's intelligent public broadcasting system uses partition control, especially playgrounds, campuses, corridors, canteens, libraries, etc. Intelligent partitioned public address system, this method can not only meet the broadcast demand, but also the system cost, while the classroom, office, and dormitory often use addressable broadcast, addressable broadcast can complete fixed-point playback and free-partition packet broadcast, Listening to exercise exams, broadcasting to find people, playing announcements, etc.

When choosing a smart public address system, we advise customers not to pursue the highest end and not to lag behind for a few years. Due to the rapid development of modern technology, the highest end is only temporary, and it is necessary to use suitable and cost-effective products.

Other customers will think that the products of First Line and One Netcom are good. These concepts are dialectical from the technical point of view. The first line products are all kinds of signals transmitted through a transmission medium. The system wiring is simple and the construction is convenient, but On the other hand, every type of electrical signal transmission has its own special transmission medium. For example, the FM signal is transmitted through the coaxial cable, and the computer control signal is transmitted through the twisted pair. If the computer control signal is transmitted through the coaxial cable, we It is necessary to convert the computer control signal into a signal that can be transmitted by the coaxial cable before the signal transmission. After the receiving end, the signal is converted back. After the completion of the two conversion devices, the device is increased. Relatively more, there will be fewer lines and more equipment. When customers choose products, they should think about performance, price, stability, scalability and other aspects to choose the most suitable products with the highest performance and price ratio.

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