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Journal Article

Spatial Analysis and Synthesis of Car Audio System and Car Cabin Acoustics with a Compact Microphone Array

Authors: Tervo, Sakari; Pätynen, Jukka; Kaplanis, Neofytos; Lydolf, Morten; Bech, Søren; Lokki, Tapio

Journal of the Audio Engineering Society · Volume 63 · Issue 11 · pp. 914–925 · November 2015

Abstract

This research proposes a spatial sound analysis and synthesis approach for automobile sound systems, where the acquisition of the measurement data is much faster than with the Binaural Car Scanning method. This approach avoids the problems that are typically found with binaural reproduction and dummy head measurements. In combination with a compact microphone array, the approach is based on the recently introduced parametric spatial sound analysis method, called the Spatial Decomposition Method (SDM). An objective analysis of the sound field with respect to direction and energy enables the synthesis of multichannel loudspeaker reproduction. Because of the extreme acoustics of an automobile cabin, the authors recommend several steps to improve both the objective and perceptual performance. Because SDM is a parametric approach to spatial impulse response analysis, this allows automobile audio systems to be tuned in a laboratory environment instead of in-situ.

Details

Publication
Journal of the Audio Engineering Society
Volume
63
Issue
11
Pages
914–925
Publication date
November 6, 2015
Affiliation
Aalto University, Department of Computer Science, Aalto, Finland; Harman, Struer, Denmark; Bang & Olufsen A/S, Struer, Denmark; Aalborg University, Department of Electronic Systems, Aalborg, Denmark (See document for exact affiliation information.)
Type
Journal Article