与过去相比,诸如离散型多通道环绕立体声之类的周边资源,已经越来越多地进入了家庭。这些资源自己本身也比过去有了较大提升,包括卫星电视,有线数字电视系统,地区DTV放送站,通过宽带网络传送的视频服务,DVD和高清晰度蓝光光盘等等。截至5月中旬,约有552种蓝光产品将在美国上市,包括未压缩的PCM,杜比True HD以及DTS HD等多种不同模式。这一数据 In contrast to the past, peripheral resources such as discrete multi-channel surround sound have increasingly entered the home. These resources themselves have greatly improved by themselves. They include satellite television, cable digital television systems, regional DTV stations, video services over broadband networks, DVDs and high-definition Blu-ray discs. As of mid-May, about 552 Blu-ray products will be available in the United States, including uncompressed PCM, Dolby True HD and DTS HD and many other modes. This data