SDI音频解嵌系统设计  

System design of audio de-multiplexes of SDI

作　　者：季小俊[1] 吴海青[1] 臧士华 

机构地区：[1]南京林业大学信息科学技术学院,江苏南京210037 [2]南京视威电子科技股份有限公司,江苏南京210038

出　　处：《电声技术》2016年第2期43-46,共4页Audio Engineering

摘　　要：针对串行数字接口,设计了一套基于FPGA的SDI音频解嵌系统。介绍了音频解嵌系统的工作原理以及设计过程。通过实际验证,该系统完全可以代替传统的ASIC设计方案,有效地将音频数据从SDI视频中分离出来,并且保证了视、音频的同步输出。只需对代码进行调整,该系统还可以随相关标准改动而进行升级,不仅缩短了产品开发的周期而且大大降低了成本。An audio de-multiplexing system of SDI based on FPGA is designed to serial digital interface. The related stand- ards which include video, audio and the operation principle of the system, the design procedure of the system are intro- duced. It is tested that the system whether instead of the traditional ASIC design and very effectively cut the audio data off the SDI video, and guarantee satisfy the video and audio for the synchronized output. This system can be upgraded along with the change of relevant standards and it just need to make the code to modify. Thus, this design not only shortens the ex- ploiting cycle of new products but also greatly reduces the cost.

关 键 词：串行数字接口(SDI) 现场可编程门阵列 数字音频 音频解嵌 

分 类 号：TN919[电子电信—通信与信息系统]