Wideband Beamforming Method Using Two-Dimensional Digital Filter

Kushida K, Shimizu Y, Nishikawa K. Wideband Beamforming Method Using Two-Dimensional Digital Filter. In: AES Convention 123. Audio Engineering Society; 2007. Paper 7310. Available from: https://aes.org/publications/elibrary-page/?id=14367

@inproceedings{Kushida2007_14367,
  author = {Kushida, Koji and Shimizu, Yasushi and Nishikawa, Kiyoshi},
  title = {{Wideband Beamforming Method Using Two-Dimensional Digital Filter}},
  booktitle = {AES Convention 123},
  note = {Paper 7310},
  year = {2007},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14367}
}

TY  - CPAPER
TI  - Wideband Beamforming Method Using Two-Dimensional Digital Filter
AU  - Kushida, Koji
AU  - Shimizu, Yasushi
AU  - Nishikawa, Kiyoshi
T2  - AES Convention 123
M1  - Paper 7310
PY  - 2007
DA  - 2007/10/06
UR  - https://aes.org/publications/elibrary-page/?id=14367
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a method for designing a DSP controlled directional array speaker with constant directivity and specified sidelobe level over the wideband frequency by means of the two-dimensional (2-D) Fourier series approximation. The band of constant directivity can be extended in the lower frequency band by using the non-physical area in the 2-D frequency plane, where the target amplitude response of the 2-D filter is set to design the 2-D FIR filter. We discuss that the beamwidth of the array speaker can be narrowed in the more lower frequency band with a modification of the original algorithm by K. Nishikawa, et al.
ER  -