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 E: Schoeps KFM 360 (after J.Bruck);

A sphere microphone (after G.Theile) is accompanied by two fig-of-eight microphones on the sides adjacent to the pressure transducers. Each omni/fig-of-eight-combination forms an MS-stereo-pair that after decoding delivers one front- and one surround-signal respectively. An optional center-signal is derived through a special 2-3-matrix (after Gerzon).