求电子信息工程专业英语(李白萍)中文翻译

Communications with Human Users. Multimedia systems involve ommunications with human users as senders or receivers of information, or both. By contrast, single medium systems, such as data and fax, can involve inter-machine communications with no human user present while the communication is underway. It is the human element that benefits from more than one medium of communication, and also from the interactive capabilities of multimedia systems.[1]
与人用户的通信。多媒体系统涉及与人用户通信的是发送或接收信息，或者两者都有。相比之下，单一的媒体系统，比如数据和传真，可以涉及机器间通信即在无人用户在场情况下进行通信。由于人的因素，使得能从多于一种媒体的通信中及多媒体系统的交互式能力中获益。

Synchronization. Multimedia systems require two types of ynchronization between the different media. Continuous synchronization is required for audio/video, for instance, to coordinate lip movement with speech. Synthetic synchronization is required by the designer of the system to organize the presentation of material in the desires manner (e.g., the sequencing of video clips with data and graphics)
同步。多媒体系统在不同的媒体间要求两种类型的同步。连续的同步是音频/视频所要求的，比如协调嘴唇蠕动和言语同步。合成的同步是系统设计者以需要的方式组织材料的演示所要求的（比如，视频片段的数据和图形的先后顺序）。