Design and Performance of a Sigma–Delta Digital Loudspeaker Array Prototype

Tatlas NA, Kontomichos F, Mourjopoulos J. Design and Performance of a Sigma–Delta Digital Loudspeaker Array Prototype. J Audio Eng Soc. 2009;57(1/2):38-45. Available from: https://aes.org/publications/elibrary-page/?id=14806

@article{Tatlas2009_14806,
  author = {Tatlas, Nicolas-Alexander and Kontomichos, Fotios and Mourjopoulos, John},
  title = {{Design and Performance of a Sigma–Delta Digital Loudspeaker Array Prototype}},
  journal = {Journal of the Audio Engineering Society},
  volume = {57},
  number = {1/2},
  pages = {38--45},
  year = {2009},
  month = jan,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14806}
}

TY  - JOUR
TI  - Design and Performance of a Sigma–Delta Digital Loudspeaker Array Prototype
AU  - Tatlas, Nicolas-Alexander
AU  - Kontomichos, Fotios
AU  - Mourjopoulos, John
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 57
IS  - 1/2
SP  - 38
EP  - 45
PY  - 2009
DA  - 2009/01/06
UR  - https://aes.org/publications/elibrary-page/?id=14806
PB  - Audio Engineering Society
LA  - en
AB  - While experimental prototypes of digital loudspeaker arrays usually use a PCM format, preliminary results show that sigma–delta technology is also a viable alternative. In the test configuration, an FPGA is connected to 32 autonomous true-digital amplifiers driving a corresponding number of miniature moving-coil loudspeakers organized in an array. The sigma–delta approach produces comparable results but with lower harmonic distortion, especially off axis and at mid-frequencies.
ER  -