Introduction to digital network public address system technology

[Audio Network Information]
The digital network public address system uses IPAudio technology to transmit audio signals in a standard IP packet over a local area network and a wide area network. It is a two-way audio sound reinforcement system for pure digital network transmission. It completely solves the problems of poor sound quality, complicated maintenance management and lack of interactivity in the traditional broadcasting system. The system equipment is simple to use, easy to install and expand, and only needs to connect the digital audio terminal to the computer network to form a powerful digital broadcasting system. Each access point does not need to be separately wired, and truly realizes computer network, digital video monitoring, public broadcasting. Multi-network integration.

The IP network broadcasting system is a product completely different from the conventional broadcasting system, the FM addressing broadcasting system, and the numerical control broadcasting system. Due to the digital audio technology built on the common platform of IP network and integrated into Shibang's own proprietary intellectual property rights, it has its inherent advantages in many aspects:

Functional aspects: Each terminal can be independently controlled to play different content (for example, 200 terminals in the LAN play 200 channels simultaneously). Not only can fully realize the functions of the traditional broadcasting system (such as: regular ringing, zone play, fire alarm, etc.), but also has functions such as free on-demand terminal and two-way intercom between terminals;

Transmission: The audio transmission distance extends infinitely. It can run on the LAN and Internet network across the gateway, supporting a wide range of important applications, centralized control of broadcasting from the main campus to the sub-campus, and simultaneous broadcasting from the company headquarters to each local branch. To achieve fast and reliable information communication.

Sound quality: The output quality of the terminal is close to the CD level (44.1K, 16bit), and the frequency response is 20-16khz, which meets the requirements for high sound quality, such as the entrance examination, the college entrance examination, the listening test of the college exams, and the daily routine in the classroom. Foreign language listening training, each pronunciation can be clearly identifiable, no longer plagued by ambiguous sounds.

Reliability: The server (Windows operating system) and the main controller (embedded operating system) provide double insurance. If one party fails, the other party can take over all terminals to ensure the basic functions of the whole system are running normally; both the main control unit and the terminal use Industrial-grade chips work 24 hours a day and are completely immune to viruses. The instability of traditional broadcasting depends on the quality of transmission lines. IP network broadcasting relies on mature Ethernet hardware, and each terminal is equivalent to being connected to the network. PC, no additional maintenance required.

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