Optimal Filtering for Focused Sound Field Reproductions Using a Loudspeaker Array

Kim Y, Ko S, Choi JW, Kim J. Optimal Filtering for Focused Sound Field Reproductions Using a Loudspeaker Array. In: AES Convention 126. Audio Engineering Society; 2009. Paper 7688. Available from: https://aes.org/publications/elibrary-page/?id=14884

@inproceedings{Kim2009_14884,
  author = {Kim, Youngtae and Ko, Sangchul and Choi, Jung-Woo and Kim, Jungho},
  title = {{Optimal Filtering for Focused Sound Field Reproductions Using a Loudspeaker Array}},
  booktitle = {AES Convention 126},
  note = {Paper 7688},
  year = {2009},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14884}
}

TY  - CPAPER
TI  - Optimal Filtering for Focused Sound Field Reproductions Using a Loudspeaker Array
AU  - Kim, Youngtae
AU  - Ko, Sangchul
AU  - Choi, Jung-Woo
AU  - Kim, Jungho
T2  - AES Convention 126
M1  - Paper 7688
PY  - 2009
DA  - 2009/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14884
PB  - Audio Engineering Society
LA  - en
AB  - This paper describes audio signal processing techniques in designing multi-channel filters for reproducing an arbitrary spatial directivity pattern with a typical loudspeaker array. In designing the multi-channel filters, some design criteria based on, for example least-squares methods and the maximum energy array are introduced as non-iterative optimization techniques with a lower computational complexity. The abilities of the criteria are firstly evaluated with a given loudspeaker configuration for reproducing a desired acoustic property in a spatial area of interest. Also additional constraints are considered to impose for minimizing the error between the amplitudes of actual and the desired spatial directivity pattern. Their limitations in practical applications are revealed by experimental demonstrations, and finally some guidelines are proposed in designing optimal filters.
ER  -