Spatial Multi-Zone Sound Field Reproduction Using Higher-Order Loudspeakers in Reverberant Rooms

Wakayama K, Takada H. Spatial Multi-Zone Sound Field Reproduction Using Higher-Order Loudspeakers in Reverberant Rooms. In: AES Convention 140. Audio Engineering Society; 2016. Paper 9560. Available from: https://aes.org/publications/elibrary-page/?id=18258

@inproceedings{Wakayama2016_18258,
  author = {Wakayama, Keigo and Takada, Hideaki},
  title = {{Spatial Multi-Zone Sound Field Reproduction Using Higher-Order Loudspeakers in Reverberant Rooms}},
  booktitle = {AES Convention 140},
  note = {Paper 9560},
  year = {2016},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18258}
}

TY  - CPAPER
TI  - Spatial Multi-Zone Sound Field Reproduction Using Higher-Order Loudspeakers in Reverberant Rooms
AU  - Wakayama, Keigo
AU  - Takada, Hideaki
T2  - AES Convention 140
M1  - Paper 9560
PY  - 2016
DA  - 2016/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18258
PB  - Audio Engineering Society
LA  - en
AB  - We propose a method for reproducing multi-zone sound fields in a reverberant room using an array of higher-order loudspeakers. This method enables sparse arrangement of loudspeakers and reproduction of independent sound fields for multiple listeners without the need for headphones. For multi-zone reproduction, global sound field coefficients are obtained using translation operator. By using the coefficient of the room transfer function measured or simulated with an extension of the image-source method, the loudspeakers’ coefficients are then calculated with the minimum norm method in the cylindrical harmonic domain. From experiments of two-zone and three-zone examples, we show that there was a 2N + 1-fold decrease in the number of Nth-order loudspeakers for accurate reproduction with the proposed method compared to conventional methods.
ER  -