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Convention Paper

Dual Radius Spherical Cardioid Microphone Arrays for Binaural Auralization

Authors: Melchior, Frank; Thiergart, Oliver; Del Galdo, Giovanni; de Vries, Diemer; Brix, Sandra

AES Convention 127 · Paper 7855 · October 2009

Abstract

The direction dependent analysis of impulse response measurements using spherical microphone arrays can

deliver a universal basis for binaural auralization. A new method using dual radius open sphere arrays is

proposed to overcome limitations in practical realizations of such arrays. Different methods to combine the

two radii have been analyzed and will be presented. A plane wave decomposition in conjunction with a

high resolution HRTF database is used to generate a binaural auralization, wherein the different designs are

simulated under ideal and real conditions. The results have been evaluated in a quality grading experiment.

It is shown that the dual radius cardioids design is an effective method to enhance the perceived quality in

comparison to conventional spherical array designs.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7855
Publication date
October 6, 2009
Session subject
Virtual Acoustics
Affiliation
Fraunhofer IDMT, Ilmenau, Germany; Fraunhofer IIS, Erlangen, Germany; IOSONO GmbH, Erfurt, Germany; TU Delft, Delft, The Netherlands (See document for exact affiliation information.)
Type
Convention Paper