The tetrahedral microphone capsule arrangement in a Soundfield microphone captures a so-called A-format signal which is then converted to a corresponding B-format signal. The phase differences between the A-format signal channels due to non-coincidence of the microphone capsules cause errors in the corresponding B-format signals and linear combinations thereof. Various strategies for designing B-format non-coincidence correction filters are compared and limitations are discussed.
Faller, Christof; Kolundzija, Mihailo
Affiliations: Illusonic LLC, Lausanne, Switzerland; Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland(See document for exact affiliation information.)
AES Convention: 126 (May 2009) Paper Number: 7766
Publication Date: May 1, 2009
Subject: Spatial Rendering
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