Robustness of a mixed-order Ambisonics microphone array for sound field reproduction

Márton Marschall*, Sylvain Favrot, Jörg Buchholz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

11 Citations (Scopus)


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.

Original languageEnglish
Title of host publication132nd Audio Engineering Society Convention 2012
Place of PublicationNew York
PublisherAudio Engineering Society
Number of pages11
ISBN (Print)9781622761180
Publication statusPublished - 2012
Externally publishedYes
Event132nd Audio Engineering Society Convention 2012 - Budapest, Hungary
Duration: 26 Apr 201229 Apr 2012


Other132nd Audio Engineering Society Convention 2012


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