remaster
verb [ T often passive ] uk/ˌriːˈmɑː.stər/ us/ˌriːˈmæs.tɚ/
（通常指为了复制音质更好的唱片而对母带进行）重新灌制，重新录制
to make a new master (= a recording from which all copies are made) of an earlier recording, usually in order to produce copies with better sound quality
The soundtrack of "The Godfather" was digitally remastered and transformed from mono to stereo. 电影《教父》的声带已经用数码技术重新灌制，并从单声道转成了立体声。