Design of a Passive DGRC Column Loudspeaker with Wave Front Synthesis

Meynial X, Grégoire G. Design of a Passive DGRC Column Loudspeaker with Wave Front Synthesis. In: AES Convention 130. Audio Engineering Society; 2011. Paper 8353. Available from: https://aes.org/publications/elibrary-page/?id=15820

@inproceedings{Meynial2011_15820,
  author = {Meynial, Xavier and Grégoire, Gilles},
  title = {{Design of a Passive DGRC Column Loudspeaker with Wave Front Synthesis}},
  booktitle = {AES Convention 130},
  note = {Paper 8353},
  year = {2011},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15820}
}

TY  - CPAPER
TI  - Design of a Passive DGRC Column Loudspeaker with Wave Front Synthesis
AU  - Meynial, Xavier
AU  - Grégoire, Gilles
T2  - AES Convention 130
M1  - Paper 8353
PY  - 2011
DA  - 2011/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15820
PB  - Audio Engineering Society
LA  - en
AB  - The DGRC (Digital and Geometric Radiation Control) principle enables assigning a large number of loudspeakers to a limited number of electronic channels. It was introduced in 2006, and is now used in digitally steerable column loudspeakers. In this paper, we propose a very simple and straightforward implementation of this principle in a passive column, where delays are approximated with all-pass passive circuits. As a result, the column is placed vertically (not tilted) and radiates a wave front which ensures high speech intelligibility and homogeneous SPL coverage. We present the design of this column, as well as modeling and experimental results. Finally, we discuss its advantages in terms of visual integration, acoustic performances, and cost effectiveness.
ER  -