A Novel 32-Speakers Spherical Source

Farina A, Chiesi L. A Novel 32-Speakers Spherical Source. In: AES Convention 140. Audio Engineering Society; 2016. Paper 258. Available from: https://aes.org/publications/elibrary-page/?id=18162

@inproceedings{Farina2016_18162,
  author = {Farina, Angelo and Chiesi, Lorenzo},
  title = {{A Novel 32-Speakers Spherical Source}},
  booktitle = {AES Convention 140},
  note = {Paper 258},
  year = {2016},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18162}
}

TY  - CPAPER
TI  - A Novel 32-Speakers Spherical Source
AU  - Farina, Angelo
AU  - Chiesi, Lorenzo
T2  - AES Convention 140
M1  - Paper 258
PY  - 2016
DA  - 2016/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18162
PB  - Audio Engineering Society
LA  - en
AB  - The construction and test of a novel compact spherical source equipped with 32 individually driven 2" loudspeakers is presented. The new sound source is designed for making room acoustics measurements, emulating the directivity pattern of various music instruments or human talkers and singers. The 32 signals feeding the loudspeakers can be obtained by three different approaches: a set of High Order Ambisonics coefficients computed for emulating the polar pattern of a fixed directivity source a set of SPS (Spatial PCM Sampling) signals recorded around a real source, employing a corresponding set of 32 microphones placed on a sphere surrounding the real source, a matrix of FIR filters, designed employing a mathematical theory almost identical to the one developed for creating virtual microphones from a spherical microphone array [1]. The presentation will show details of the construction of the new loudspeaker array, and the results of the first tests performed for evaluating the capability of creating arbitrary polar radiation patterns.
ER  -