Robustness of a Mixed-Order Ambisonics Microphone Array for Sound Field Reproduction

Marschall M, Favrot S, Buchholz J. Robustness of a Mixed-Order Ambisonics Microphone Array for Sound Field Reproduction. In: AES Convention 132. Audio Engineering Society; 2012. Paper 8645. Available from: https://aes.org/publications/elibrary-page/?id=16283

@inproceedings{Marschall2012_16283,
  author = {Marschall, Márton and Favrot, Sylvain and Buchholz, Jörg},
  title = {{Robustness of a Mixed-Order Ambisonics Microphone Array for Sound Field Reproduction}},
  booktitle = {AES Convention 132},
  note = {Paper 8645},
  year = {2012},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16283}
}

TY  - CPAPER
TI  - Robustness of a Mixed-Order Ambisonics Microphone Array for Sound Field Reproduction
AU  - Marschall, Márton
AU  - Favrot, Sylvain
AU  - Buchholz, Jörg
T2  - AES Convention 132
M1  - Paper 8645
PY  - 2012
DA  - 2012/04/06
UR  - https://aes.org/publications/elibrary-page/?id=16283
PB  - Audio Engineering Society
LA  - en
AB  - Spherical microphone arrays can be used to capture and reproduce the spatial characteristics of acoustic scenes. A mixed-order Ambisonics (MOA) approach was recently proposed to improve the horizontal spatial resolution of microphone arrays with a given number of transducers. In this paper, the performance and robustness of an MOA array to variations in microphone characteristics as well as self-noise was investigated. Two array processing strategies were evaluated. Results showed that the expected performance benefits of MOA are achieved at mid to high frequencies, and that robustness to various errors was similar to that of HOA arrays with both strategies. The approach based on minimizing the error of the reproduced spherical harmonic functions showed better performance at high frequencies for the MOA layout.
ER  -