1. Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark, Ørsteds Plads, Building 352, Kongens Lyngby, DK-2800, Denmark
2. Interacoustics A/S, Audiometer Allé 1, Middelfart, DK-5500, Denmark
3. Interacoustics Research Unit, Technical University of Denmark, Ørsteds Plads, Building 352, Kongens Lyngby, DK-2800, Denmark