近年来,影音技术的发展可谓是“日新月异”,新产品层出不穷。就拿选择影碟机来说,很多消费者至今还没有弄清楚VCD、CVD、SVCD、DVCD的区别,“必将淘汰VCD、SVCD”的,各种各样的“全兼容”、“多功能”DVD机已“铺天盖地”而来。同样令影音爱好者“头疼”的是,各种新型环绕系统也不断涌现,令人目不暇接。如杜比定向逻辑环绕声、THX、杜比数码环绕声、DTS、虚拟环绕声技术等等,以及应用这些技术的影音产品,在音响市场 In recent years, the development of audio-visual technology can be described as “ever-changing”, an endless stream of new products. Take the choice of DVD players, many consumers so far have not yet figured out the difference between VCD, CVD, SVCD, DVCD, “will be eliminated VCD, SVCD”, a variety of “fully compatible”, “versatile” DVD player has “overwhelming” come. The same video and audio enthusiasts “headache” is that a variety of new surround systems are also emerging, dizzying. Such as Dolby Pro Logic surround sound, THX, Dolby Digital surround sound, DTS, virtual surround sound technology, etc., as well as audio and video products using these technologies in the audio market