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

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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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
TitleProceedings of the AES 25th UK CONFERENCE
Number of pages7
Publication date2012
StatePublished

Conference

ConferenceAES 25th UK CONFERENCE
CountryUnited Kingdom
CityYork
Period25/03/1227/03/12
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