"Sony Dynamic Digital Sound (Japanese: \u30BD\u30CB\u30FC\u30C0\u30A4\u30CA\u30DF\u30C3\u30AF\u30C7\u30B8\u30BF\u30EB\u30B5\u30A6\u30F3\u30C9, Hepburn: Son\u012B Dainamikku Dejitaru Saundo, SDDS) is a cinema sound system developed by Sony. Compressed digital sound information is recorded on both outer edges of the 35 mm film release print. The system supports up to eight independent channels of sound: five front channels, two surround channels and a single sub-bass channel."@en . . .