Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ @lemmy.dbzer0.com shrugal @lemm.ee 2y ago What does AC3D mean? So I know what AC3 means of course, but what does AC3D mean in some releases?