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笔者认为VCD并不适宜于用作正宗家庭影院的影音节目源。原因是VCD重播画质的质量较差(解像度不到300线),图像不够清晰;而重放的声音缺少家庭影院那种多声道的环绕声包围感。VCD碟片是按MPEG—1压缩编码方式对图像和声音进行压缩处理的,声音信号按双声道进行压缩编码,与DVD碟片采用MPEG—2或杜比DD的多声道(5.1声道)音频压缩编码方式有着相当大的区别。因此从原理上讲,VCD不可能也无法产生多声道的音响效果,也即VCD没有环绕声。但是,实际上当人们
I believe that VCD is not suitable for authentic home theater audio and video sources. The reason is the quality of the VCD replay quality is poor (resolution of less than 300 lines), the image is not clear enough; and replay the sound of the lack of multi-channel surround sound home theater surround feeling. VCD discs are compressed according to the MPEG-1 compression method for images and sound, the sound signals are compressed and encoded in two channels, and DVD discs are encoded in multi-channel with MPEG-2 or Dolby DD (5.1-channel Audio compression coding has a considerable difference. Therefore, in principle, VCD can not and can not produce multi-channel sound effects, that is, VCD does not surround sound. But in fact when people