Metrics for performance assessment of mixed-order Ambisonics spherical microphone arrays

Sylvain Emmanuel Favrot, Marton Marschall

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

383 Downloads (Pure)


Mixed-order Ambisonics (MOA) combines planar (2D) higher order Ambisonics (HOA) with lower order
periphonic (3D) Ambisonics. MOA encoding from spherical microphone arrays has the potential to provide
versatile recordings that can be played back using 2D, 3D or mixed systems. A procedure to generate
suitable layouts for a given MOA combination order is introduced consisting of rings of microphones at
several elevation angles for any given MOA combination order. Robustness and directivity measures were
evaluated for four MOA layouts. Results showed that MOA vertical directivity was similar to 3D HOA and
that MOA horizontal directivity was in between the planar and periphonic order.
Original languageEnglish
Title of host publicationProceedings of the AES 25th UK CONFERENCE
Number of pages7
Publication date2012
Publication statusPublished - 2012
EventAES 25th UK CONFERENCE: Spatial Audio in Today’s 3D World - University of York’s Music Research Centre, York, United Kingdom
Duration: 25 Mar 201227 Mar 2012


ConferenceAES 25th UK CONFERENCE
LocationUniversity of York’s Music Research Centre
Country/TerritoryUnited Kingdom


Dive into the research topics of 'Metrics for performance assessment of mixed-order Ambisonics spherical microphone arrays'. Together they form a unique fingerprint.

Cite this