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自70年代中后期,专业影院出现杜比A4-2-4立体声电影以来,这类立体声影片的数量增加很快,立体声影院也越来越多。进入80年代后,杜比A4-2-4立体声影片和影院的数量与日俱增。随着VCR 的发展与普及,家庭影院也越来越多。供给家庭影院的电影节目,大都是杜比4-2-4立体声类型的。因此家庭影院立体声的设备也很快发展起来,而且还随着专业影院立体声新类型的出现,家庭影院新的电声系统也随之而出现。那么现行电影立体声都有哪些类型,又有哪些特点,和现
Since the mid-to-late 1970s, the number of such stereo videos has increased rapidly with the advent of the Dolby A4-2-4 Stereo Cinema in professional cinemas, and more and more stereosound theaters. Since the 1980s, the number of Dolby A4-2-4 stereo videos and theaters has been increasing. With the development and popularity of VCR, home theater is also more and more. Most of the movies that are being supplied to home cinemas are the Dolby 4-2-4 stereo type. Therefore, home theater stereo equipment is also rapidly developed, but also with the emergence of new types of professional cinema stereo, home theater new electro-acoustic system also appears. So what is the current type of movie stereo, what are the characteristics, and now