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THX 美国卢卡斯电影公司所提倡的电影播放规格,如喇叭、DVD、扩大机等 AV 产品,需经过多项严格制作规格通过后,才能成为“THX”之认证产品,所以简单的说“THX”是一种如 ISO 9001的认证规格。THX Ultra 使用空间在3000立方英口以上之器材授于“THXUltra”认证,属旗舰级产品授证。THX SURROUND EX 卢卡斯电影公司和杜比公司共同开发的Dolby Digital Surround EX 家用影院系统。以数字5.1声道架构
THX American Lucasfilm company advocates the movie playback specifications, such as speakers, DVD, amplifier and other AV products, subject to a number of strict production specifications adopted in order to become “THX ” certification products, so simply “THX ” is a certification standard such as ISO 9001. THX Ultra uses space above 3000 cubic feet mouth of the device awarded the “THXUltra ” certification, is a flagship product certification. THX SURROUND EX The Dolby Digital Surround EX home theater system developed by Lucasfilm and Dolby. With digital 5.1 channel architecture