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Convention Paper

Wave Field Synthesis Driving Functions for Large-Scale Sound Reinforcement Using Line Source Arrays

Authors: Schultz, Frank; Firtha, Gergely; Fiala, Peter; Spors, Sascha

AES Convention 142 · Paper 9722 · May 2017

Abstract

Wave field synthesis (WFS) can be used for wavefront shaping using line source arrays (LSAs) in large-scale sound reinforcement. For that the individual drivers might be electronically controlled by WFS driving functions of a virtual directional point source. From the recently introduced unified 2.5D WFS framework it is known that positions of amplitude correct synthesis (PCS) only exist along an arbitrary shaped curve—the reference curve—in front of the LSA. However, its shape can be adapted with the so called referencing function. We introduce the adaption of the referencing function along the audience line of typical concert venues for optimized wavefront shaping. This yields considerable improvements with respect to sound field’s homogeneity and more convenient setups compared to previous WFS-based sound reinforcement.

Details

Published in
AES Convention 142
AES Convention
142
Paper number
9722
Publication date
May 6, 2017
Session subject
Spatial Audio—Binaural 3 and Objects
Affiliation
Technical University of Berlin, Berlin, Germany; Budapest University of Technology and Economics, Budapest, Hungary; University of Rostock, Rostock, Germany (See document for exact affiliation information.)
Type
Convention Paper