CAI课件中多种媒体素材的获取与处理

Methods of Obtaining and Processing Multimedia in Producing CAI Courseware

计算机辅助教学 (CAI)课件的制作需要图、文、声、像等多种媒体的参与 ,协同发挥其真实、生动、新颖的视听效果 ;而计算机获取和处理各种媒体的方法各异 ,正确应用计算机及声卡、视频捕捉卡、扫描仪等硬件和计算机有关软件获取并处理所需的媒体信息 ,是制作多媒体CAI课件的重要内容 ;较祥细地介绍了声音、图象、图形、动画、视频的获取与处理方法 .

Pictures, texts and voice are multimed ia which participate in the making of CAI (Computer-Aided Instruction) coursewa re. They cooperate with each other to develop the real, vivid, novel seeing and hearing effect. But computers differ in the way of catching and handling multime dia. So the important content of making multimedia CAI courseware is to use the hardware (sound card, video-catch card, scanner) and relative software correctl y on catching and handling the required media information. The author gives a detailed introduction on how to catch and handle the voice, pictures, figures, m ovies and video.