The IP network broadcasting system adopts the widely used TCP/IP network technology in the world today, transmitting audio signals in the form of standard IP packets on local and wide area networks. It is a pure digital transmission audio amplification system, completely solving the problems of poor sound quality, complex maintenance and management, and lack of interactivity in traditional broadcasting systems. The system equipment is easy to use and easy to install and expand. By connecting the audio terminal to the park network, a powerful digital broadcasting system can be formed, and each access point does not require separate wiring. Ultimately, the integration of computer networks, digital video surveillance, and digital broadcasting will be achieved.
The IP network broadcasting system is a product that is completely different from traditional broadcasting systems, such as frequency modulation and addressing broadcasting systems. It is built on a universal network platform and integrates digital audio technology, demonstrating significant advantages in multiple aspects.
① In terms of functionality
Can independently control each terminal to play different content (such as playing 200 programs simultaneously across 200 terminals in a local area network). Not only can it fully realize the functions of traditional broadcasting systems (such as timed ringing, zoning playback, fire alarm, etc.), but it also has functions such as terminal free on-demand and two-way intercom between terminals;
② In terms of transmission
The audio transmission distance is infinitely extended and can run on cross gateway local area networks and Internet networks, supporting a wide range of important applications. It centrally controls broadcasting from the main campus to sub campuses, and enables simultaneous broadcasting from the company headquarters to various regional branches, achieving fast and reliable information communication;
③ In terms of sound quality
The output sound quality of the terminal is close to CD level (44.1K, 16bit), which meets the high requirements for sound quality in situations such as listening playback in the college entrance examination, CET-4 and CET-6 exams, and daily foreign language listening training in the classroom. Each pronunciation can be clear and distinguishable, no longer troubled by unclear sounds.
The advantages of IP network broadcasting system
① Stronger features
A pure digital broadcasting system that covers all the functions of traditional campus broadcasting systems. And achieved the function of audio on demand (AOD). And fully utilizing the resources of the campus network, audio resources on the network can be accessed anytime and anywhere. Due to each terminal having an independent IP address, it is possible to control any terminal to play different programs.
② Better sound quality
Due to the use of network transmission technology, the audio signal has no transmission interference and distortion. The MP3 compression algorithm is used to occupy low network bandwidth (8k-320k) and ensure sound quality fidelity. After testing, a 44.1kHz 16bit sampling rate of 128kbps is used to compress the passband (line output) from 20-16kHz, with a distortion of ≤ 3%.
③ Higher reliability
The unstable factors of campus broadcasting system mainly depend on the quality of transmission lines. Unreasonable transmission lines may cause instability or even burn out high-power constant voltage power amplifiers. The pure digital broadcasting system relies on mature Ethernet communication technology, and each terminal device is equivalent to a simple computer connected to the campus network. Users only need to ensure smooth network connectivity without the need for additional maintenance.