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

Marton Marschall, Sylvain Emmanuel Favrot, Jörg Buchholz

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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 benets 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.
Original languageEnglish
Title of host publication132nd Audio Engineering Society convention
Number of pages11
Publication date2012
Publication statusPublished - 2012
EventAES 132nd Convention - Budapest Congress & World Trade Center, Budapest, Hungary
Duration: 26 Apr 201229 Apr 2012


ConferenceAES 132nd Convention
LocationBudapest Congress & World Trade Center
Internet address

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