History and current state of the war between the two main approaches to surround sound: discrete speaker feeds versus hierarchical matrix

40th AES Conference - Tokyo, 8-10 October 2010

The ORF seminar

System F: OCT Surround; Instead of the Hamasaki-Square for the surround signals two cardioids (Schoeps CCM4) are used right behind (50cm) the frontal OCT array and with a slightly extended base (100cm). The cardioids are oriented straight away from the orchestra (180°), so that their direct-signal-pickup is minimal.