Data Tracking/(数据跟踪) -> Electroacoustic Devices/(电声设备) -> Sound Production and Manipulation [SPM]/(制作与处理)

Data Tracking/(数据跟踪) -> Electroacoustic Devices/(电声设备) -> #[Tier 4] Technical Aspects for Technologists/([第四]技术层为技术员) -> Users Group/(用户群)

Data Tracking/(数据跟踪) -> Electroacoustic Devices/(电声设备) -> Technique/(技能) -> Step 4 Postgraduate/(第四步研究生) -> Years Group/(年级群)