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Journal Article

A Second-Order Ambisonics Device Using Velocity Transducers

Authors: Cengarle, Giulio; Mateos, Toni; Bonsi, Davide

Journal of the Audio Engineering Society · Volume 59 · Issue 9 · pp. 656–668 · September 2011

Abstract

The second-order components of a spherical harmonics expansion of the sound pressure field can be obtained by means of velocity transducers based on hot-wire anemometry. Such velocity transducers are small compared to acoustic wavelengths and can be mounted on a tiny rigid bar only a few millimeters wide, thereby reducing the effects of wave diffraction and acoustic shadows. Numeric simulations and experimental tests using two Microflown pressure-velocity transducers validate the proposed approach.

Details

Publication
Journal of the Audio Engineering Society
Volume
59
Issue
9
Pages
656–668
Publication date
September 6, 2011
Affiliation
Fundació Barcelona Media, Barcelona, Spain; Fondazione Scuola di San Giorgio, Musical and Architectural Acoustics Laboratory, Venezia, Italy (See document for exact affiliation information.)
Type
Journal Article