Optimizing Source and Sensor Placement for Sound Field Control: An Overview

Shoichi Koyama (1) , Gilles Chardon (2) , Laurent Daudet (3)

1 University of Tokyo
2 L2S - Laboratoire des signaux et systèmes
3 IL - Institut Langevin - Ondes et Images (UMR7587)

In order to control an acoustic field inside a target region, it is important to choose suitable positions of secondary sources (loudspeakers) and sensors (control points/microphones). This paper provides an overview of state-of-the-art source and sensor placement methods in sound field control. Although the placement of both sources and sensors greatly affects control accuracy and filter stability, their joint optimization has not been thoroughly investigated in the acoustics literature. In this context, we reformulate five general source and/or sensor placement methods that can be applied for sound field control. We compare the performance of these methods through extensive numerical simulations in both narrowband and broadband scenarios. Index Terms-source and sensor placement, sound field control , sound field reproduction, subset selection, interpolation.

Domains: Signal and Image Processing

Shoichi Koyama, Gilles Chardon, Laurent Daudet. Optimizing Source and Sensor Placement for Sound Field Control: An Overview. IEEE/ACM Transactions on Audio, Speech and Language Processing, 2020, ⟨10.1109/TASLP.2020.2964958⟩. ⟨hal-02459046⟩