一流的屏幕广播速度，特别适合多媒体课件的教学；语音方面采用音频混合技术，支持多人会话，如同真实的课堂讨论一般；影音广播不仅支持VCD、MPEG，还支持AVI、WAV等多种-First-class screen broadcast rate, especially for multimedia courseware for teaching　phonetic audio mixing technology used to support more than conversation, as a real general class discussion　video broadcast not only supports VCD, MPEG, also supports AVI, WAV etc.