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AV技术的发展是随着数字化的发展同步前进的。过去处理AV信号都是采用模拟的方法进行的。摸拟方法是将AV信号转化为模拟电流的变化,通过一定的电路进行处理,再经磁记录设备记录或由播放设备重现AV信号的图像和声音,这种方法消除噪声困难、容易失真、不易修改,且成本高、兼容性差、不易联网。 数字化方法就是对AV信号进行数字化编码,通过计算机对编码信号进行编辑和修改,利用数字化的播放设备解码,再现AV信号的图像和声音。这种方法不仅能有效地克服模拟方法的缺点,且设备成本低,兼容性好,易于联网使用。 Avid技术公司是世界著名的计算机视频解决方案供应商,该公司提供的软、硬件产品技术卓越,功能强劲,能有效地处理分布式数字化AV媒体的摄制、创作、编辑和播放工作,Avid在数字化技术的电影、录像和声音编辑软硬件技术上占据世界领导地位,其技术亦适用于桌面系统录像和新闻广播等领域。该公司四月份在美国拉斯维加斯举行的NAB博览会上推出了一系列最新产品,介绍如下:
The development of AV technology is moving forward with the development of digitalization. In the past, AV signals were processed using analog methods. The simulation method is to convert the AV signal into a change of analog current, process it through a certain circuit, and then record or reproduce the AV signal image and sound by the magnetic recording device. This method eliminates the difficulty of noise and distortion. Not easy to modify, and high cost, poor compatibility, difficult to network. The digital method is to digitally encode an AV signal, edit and modify a coded signal through a computer, and use a digital playback device to decode and reproduce an AV signal image and sound. This method not only can effectively overcome the shortcomings of the simulation method, but also has low equipment cost, good compatibility, and easy networking. Avid Technology is a world-renowned provider of computer video solutions. The software and hardware products provided by the company are highly technical and powerful, and can effectively handle the production, creation, editing, and playback of distributed digital AV media. Avid is digital The world’s leading position in technology for hardware, software, and hardware editing of movies, videos, and sounds, and its technology is also applicable to desktop video recording and news broadcasting. The company launched a series of new products at the NAB Expo held in Las Vegas in the United States in April.