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Convention Paper

Holographic Sound Field Analysis with a Scalable Spherical Microphone-Array

Authors: Albrecht, Bernhard; Del Galdo, Giovanni; Husung, Stephan; Lotze, Jörg; Schlesinger, Anton

AES Convention 122 · Paper 7145 · May 2007

Abstract

Room acoustic parameters vary greatly with the position of the receiver and the source, so that we cannot extract exhaustive information about the room acoustics from independent single-point measurements. Using array measurements permits to predict the sound field with a high spatial resolution and leads to a more precise assessment of the room acoustic properties. We propose an array technique to investigate room acoustics by reconstructing the volumetric sound field from measurements taken on a sphere using methods of Nearfield Acoustical Holography (NAH). A virtual spherical single-microphone-array was constructed and successfully tested in room acoustical modal analysis.

Details

Published in
AES Convention 122
AES Convention
122
Paper number
7145
Publication date
May 6, 2007
Session subject
Room and Architectural Acoustics; Sound Reinforcement
Affiliation
Delft University of Technology; TU Ilmenau (See document for exact affiliation information.)
Type
Convention Paper