1. Department of Acoustics and Sonar, The Netherlands Organization for Applied Scientific Research (TNO), The Hague, Zuid-Holland 2597 AK, The Netherlands
2. Acoustical Wavefield Imaging, ImPhys, Delft University of Technology, Delft, Zuid-Holland 2628 CJ, The Netherlands
3. Department of Optomechatronics, The Netherlands Organization for Applied Scientific Research (TNO), Delft, Zuid-Holland 2628 CK, The Netherlands
4. Nearfield Instruments B.V., Rotterdam, Zuid-Holland, 3047 AT, The Netherlands
5. Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, Noord-Brabant 5612 AZ, The Netherlands