Dolby
/ˈdɒlbɪ/noun
mass noun
1- trademark an electronic noise-reduction system used in tape recording to reduce hiss〈商标〉杜比降噪系统。
1.1
- an electronic system used to provide stereophonic sound for cinemas and television sets（影院和电视机的）立体声电子系统, 杜比系统。
词源
1960s: named after Ray M. Dolby (born 1933)， the American engineer who devised it.