a system for reducing background noise in sound recordings 杜比降噪系统 a system that provides stereo sound for cinemas, televisions, etc. 杜比降噪系统 It's better to see this film on a big screen with Dolby surround sound. 最好在大屏幕上观看带有杜比环绕声的电影。
Word Origin1960s: named after Ray M. Dolby (born 1933), the American engineer who devised it.