ESPRO 2.0 – Implementation of a surrounding 350-loudspeaker array for 3D sound field reproduction

Noisternig M, Carpentier T, Warusfel O. ESPRO 2.0 – Implementation of a surrounding 350-loudspeaker array for 3D sound field reproduction. In: AES Conference: UK 25th Conference: Spatial Audio in Today’s 3D World. Audio Engineering Society; 2012. Paper 14. Available from: https://aes.org/publications/elibrary-page/?id=18121

@inproceedings{Noisternig2012_18121,
  author = {Noisternig, Markus and Carpentier, Thibaut and Warusfel, Olivier},
  title = {{ESPRO 2.0 – Implementation of a surrounding 350-loudspeaker array for 3D sound field reproduction}},
  booktitle = {AES Conference: UK 25th Conference: Spatial Audio in Today’s 3D World},
  note = {Paper 14},
  year = {2012},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18121}
}

TY  - CPAPER
TI  - ESPRO 2.0 – Implementation of a surrounding 350-loudspeaker array for 3D sound field reproduction
AU  - Noisternig, Markus
AU  - Carpentier, Thibaut
AU  - Warusfel, Olivier
T2  - AES Conference: UK 25th Conference: Spatial Audio in Today’s 3D World
M1  - Paper 14
PY  - 2012
DA  - 2012/03/06
UR  - https://aes.org/publications/elibrary-page/?id=18121
PB  - Audio Engineering Society
LA  - en
AB  - The “Espace de projection” (ESPRO), the variable acoustics performance hall of Ircam, was designed and built for providing the largest variability possible with regard to form, volume, and acoustical properties. The walls and ceiling consist of individually rotatable prisms with three different material surfaces to absorb, reflect or diffuse the incident sound. To vary the hall’s volume and shape three ceiling panels can be raised or lowered independently, and a roller curtain allows for separating the different volumes. Despite the remarkable flexibility of this room a surrounding 350-loudspeaker array has been recently installed that aims at varying and controlling the acoustics to a greater extent than is possible by passive variable acoustics. Higher-order Ambisonics (HOA) provides the means for creating immersive 2D/3D audio scenes including reverberation and environmental effects. This article reviews the theory with regard to the installation of a HOA array in the ESPRO. The discussion will be mainly focused on the definition of a feasible grid of loudspeakers and the design of HOA decoders in order to overcome the practical limitations of using non-uniform loudspeaker arrays.
ER  -