Equalization for Central Phantom Images and Dependence on Loudspeaker Spacing: Reformatting from Three Loudspeakers to Two Loudspeakers

Bauck J. Equalization for Central Phantom Images and Dependence on Loudspeaker Spacing: Reformatting from Three Loudspeakers to Two Loudspeakers. In: AES Convention 109. Audio Engineering Society; 2000. Paper 5240. Available from: https://aes.org/publications/elibrary-page/?id=9098

@inproceedings{Bauck2000_9098,
  author = {Bauck, Jerry},
  title = {{Equalization for Central Phantom Images and Dependence on Loudspeaker Spacing: Reformatting from Three Loudspeakers to Two Loudspeakers}},
  booktitle = {AES Convention 109},
  note = {Paper 5240},
  year = {2000},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=9098}
}

TY  - CPAPER
TI  - Equalization for Central Phantom Images and Dependence on Loudspeaker Spacing: Reformatting from Three Loudspeakers to Two Loudspeakers
AU  - Bauck, Jerry
T2  - AES Convention 109
M1  - Paper 5240
PY  - 2000
DA  - 2000/09/06
UR  - https://aes.org/publications/elibrary-page/?id=9098
PB  - Audio Engineering Society
LA  - en
AB  - The problem of properly equalizing the centered phantom image (e.g., centered vocalist or virtual center loudspeaker in a home theater) is examined in detail. The strong dependence of the correct EQ on loudspeaker spacing is emphasized. Applying the theory of head-related stereophony, correct EQ curves are derived for several common loudspeaker spacings. Complete results are presented as magnitude responses of second- and fourth-order analog and digital filters as well as poles and zeros, making possible cookbook implementations. A surface plot shows magnitude responses for correct EQ for loudspeaker spacings from ±90° to 0°. Results are also presented for the situation in which the correct EQ has been applied for a particular loudspeaker spacing, but the loudspeakers are at other spacings. Filters realizing the inverses of these results will correct the mistake. A modest standardization effort will allow manufacturers to build user-adjustable correction filters into their equipment.:
ER  -