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

Surround Panning Laws

Many different amplitude-panning laws are available

“Pairwise Panning” with constant power – signal is sent to just 2 loudspeakers simultaneusly

Peter Cravens’ panning laws based on high-order Ambisonics decoding; all 5 speakers are always fed