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

Hamasaki-Square: invented by Kimio Hamasaki of the NHK Science and Research Laboratory. This consists of 4 fig-of-eight microphones pointed to the sides (Schoeps CMC8) arranged in a square of about 2m sidelenght, placed not too far behind the main microphone (about 5m).