Difference between Digital Network Broadcasting and Traditional Broadcasting

Disadvantages of traditional broadcasting: 1). Backward technology, poor compatibility and expansibility. The existing broadcasting basically adopts the working mode of analog transmission and manual management, and the system is vulnerable to environmental interference, and crosstalk is easy to occur during multicast. Digital format (MP3) audio files can't be played directly at the terminal, and can't be connected to IP network, which truly realizes audio source digitization and automatic playback management. 2) Poor sound quality and single function. At present, broadcasting equipment can only be used for background music, radio announcements and other activities in this area, which can not meet the needs of long-distance unified broadcasting in factories, and it is impossible for company managers to speak to all factories at the same time. 3) Complicated installation, inconvenient maintenance and high failure rate. Constant-voltage cable broadcasting is configured in strict accordance with the principle of impedance and power matching, so the power amplifier is often burned out due to the failure of a transformer or speaker, which affects the whole broadcasting. 4). Poor manageability and remote control. Because there are only special playback devices (tapes, records, CD players, etc.). ) and computers storing MP3 files can be used as audio sources, and special personnel are needed to manage the playing content in special places, so it is impossible to effectively manage the playing audio sources by using modern technology, let alone control remote playing, which is not conducive to the flexible application of the playing system and causes a waste of resources. The hotspot of modern network broadcasting: a more powerful digital broadcasting system, covering all the functions of the traditional broadcasting system. And make full use of WAN resources, you can get audio resources on the network anytime and anywhere. Because each terminal has an independent IP address, it can control any terminal to play different programs, and the sound quality is better. Due to the adoption of network transmission technology, the audio signal has no transmission interference and distortion. MP3 compression algorithm occupies low network bandwidth (8k- 128k), which can ensure the fidelity of sound quality. After testing, the sampling rate of 44. 1khz 16bit is used to compress the 20- 16khz passband (line output), and the distortion is less than or equal to 3%, which makes the installation easier. As long as each factory has the following two conditions: 1) ADSL dial-up internet access; (2) There are AC 220V sockets and standard Ethernet RJ45 sockets; Provided by WANPUT, the world's largest manufacturer of digital network broadcasting system!