Frank Schultz

Improved Referencing Schemes for 2.5D Wave Field Synthesis Driving Functions

Wave Field Synthesis allows the reconstruction of an arbitrary target sound field within a listening area by using a secondary source contour of spherical monopoles. While phase correct synthesis is ensured over the whole listening area, amplitude deviations are present besides a predefined reference curve. So far, the existence and potential shapes of this reference curve was not extensively discussed in the Wave Field Synthesis literature. This paper introduces improved driving functions for 2.5D Wave Field Synthesis. The novel driving functions allow for the control of the locations of amplitude correct synthesis for arbitrarily shaped—possibly curved—secondary source distributions. This is achieved by deriving an expressive physical interpretation of the stationary phase approximation leading to the presented unified Wave Field Synthesis framework. The improved solutions are better suited for practical applications. Additionally, a consistent classification of existing implicit and explicit 2.5D sound field synthesis solutions as special cases of the unified framework is given.

Mixed Analytical-Numerical Filter Design for Optimized Electronic Control of Line Source Arrays

Copyright applies. A non-exclusive, non-transferable and limited right to use is granted. This document is intended solely for personal, non-commercial use. Terms of Use Straube, F., Schultz, F., Makarski, M., & Weinzierl, S. (2018). Mixed Analytical-Numerical Filter Design for Optimized Electronic Control of Line Source Arrays. Journal of the Audio Engineering Society, 66(9), 690– 702. https://doi.org/10.17743/jaes.2018.0043 Florian Straube; Frank Schultz; Michael Makarski; Stefan Weinzierl