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

Timeline

Dolby Stereo (4-2-4, optical)

1975

Discrete

Matrix

1984

1987

1992

Dolby Digital (lossy, 5.1)

1999

2000

Dolby Surround (VHS tape)

Dolby Pro Logic (VHS tape)

Dolby Pro Logic II (5.1)

Dolby Digital Ex, DTS Es (6.1)

1993

DTS (5.1), SDDS (7.1), lossy

1998: The DVD !!!!