The Design And Implementation Of Multi-channel Audio Mornitoring System Based On Ethernet

With the rapid development of computer and digital signal processing technology,the gathering,production and broadcast control of broadcast stations have been continuously cyberized,dititalized and automatized,Broadcast safely has always been the lifeblood of broadcast station,the monitoring of audio signal is needed in order to guarantee the broadcast system working smoothly.Centealized monitoring is the mostly applied solution for audio monitoring system existing in current market,which is also being used in our station.Centealized monitoring require all the signal sent to the same device which make the circuit miscellaneous,poor flexibility,lack of monitoring channel,installation complexity,can not cover the entire audio system evenly,audio SNR would greatly reduced after a long-distance transmitson,no record available,and the up grading of the system is complicated and takes high cost.Taking the metioned facts above and the actual demand of our broadcast station into consideration,we put forward a multi-channel digital audio monitoring system based on Ethernet.In this system we install the monitoring terminal distributed to every live room,return data through the network and record it,makes technicians to monitor the output signal of audio devices via the PC software in real-time and alert technicians in time when a malfunction occurs,the records would be helpful when analyzing the malfunction,the increase of monitoring channel reduce the burden of technicians and guarantee the broadcast security effectively.The system will be well applicated in future.This passage was written aiming at multi-channel digital audio monitoring system based on Ethernet,by analyzing the status of work,doing research of digital audio codec technology,Ethernet technology and application design.Use the CS8414 chip for digital audio decoding,The ZNE-100T module is used for Ethernet communication.The data collection program and color bar monitor program are based on C/S architecture,using Visual Basic 6.0 as develop language,using SQL Server for data storage.The state record and query appliction is based on B/S architecture,using ASP and JAVA Script as develop language.The system satisfied the requirement and performed well in the online test.The quantity of device that can be monitored increased by 100%.Finally,the research work of this paper is summarized and forecasted.