基于逻辑结构优先的IP网络音视频传输(AVoIP)解决方案研究OA

This paper addresses the challenges of multicast interference and clock heterogeneity encountered during the transmission of multi-protocol,multi-point audio and video signals at the Fourth Session of the Sound Forum&Audio Engi-neering Society(AES)Beijing Chapter Special Event.A lightweight stability solution based on logical planning of the exist-ing network structure is proposed and validated.The core innovation lies in establishing the engineering approach of"Logi-cal Isolation Over Policy Stacking".Without relying on dedicated AV switches,complex QoS,or IGMP Snooping,the solu-tion achieves stable transmission by leveraging only the existing network infrastructure of the Sound Production and Engi-neering Center at Beijing Film Academy,utilizing enterprise-grade switches and precise VLAN broadcast domain isolation under sufficient bandwidth redundancy.Interoperability between Ravenna and Dante devices is achieved through the AES67 standard,while hardware Sample Rate Conversion(SRC)and clock domain isolation technologies successfully re-solve clock synchronization issues caused by the coexistence of 96 kHz and 48 kHz dual sampling rate systems.Practical operation demonstrates that this solution achieves high stability and low-latency synchronization for multi-site,multi-proto-col audio and video transmission while reducing configuration complexity by over 70%.It offers strong scalability and reus-ability,providing an efficient and reliable practical reference for networked audio and video system integration in similar large-scale events.