A Method to Reproduce a Directional Sound Source by Using a Circular Array of Focused Sources in Front of a Linear Loudspeaker Array

Tsutsumi K, Haneda Y, Noguchi K, Takada H. A Method to Reproduce a Directional Sound Source by Using a Circular Array of Focused Sources in Front of a Linear Loudspeaker Array. In: AES Convention 144. Audio Engineering Society; 2018. Paper 9978. Available from: https://aes.org/publications/elibrary-page/?id=19495

@inproceedings{Tsutsumi2018_19495,
  author = {Tsutsumi, Kimitaka and Haneda, Yoichi and Noguchi, Ken'ichi and Takada, Hideaki},
  title = {{A Method to Reproduce a Directional Sound Source by Using a Circular Array of Focused Sources in Front of a Linear Loudspeaker Array}},
  booktitle = {AES Convention 144},
  note = {Paper 9978},
  year = {2018},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19495}
}

TY  - CPAPER
TI  - A Method to Reproduce a Directional Sound Source by Using a Circular Array of Focused Sources in Front of a Linear Loudspeaker Array
AU  - Tsutsumi, Kimitaka
AU  - Haneda, Yoichi
AU  - Noguchi, Ken'ichi
AU  - Takada, Hideaki
T2  - AES Convention 144
M1  - Paper 9978
PY  - 2018
DA  - 2018/05/06
UR  - https://aes.org/publications/elibrary-page/?id=19495
PB  - Audio Engineering Society
LA  - en
AB  - We propose a method to create a directional sound source in front of a linear loudspeaker array. The method creates a virtual circular loudspeaker array comprising multiple focused sources to reproduce directivity patterns. In the proposed method, the driving functions for the secondary sources are defined as a cascade combination of two driving functions: The first one for directivity control derived by an analytical conversion of circular harmonic modes, and the second one for creating focused sources. The proposed driving functions can deal with directivity rotation by changing the position of focused sources, thereby avoiding recalculations of driving functions. Using computer simulation, we obtained accuracy and algorithmic complexity comparable or better than those of a conventional method.
ER  -