[1] IMEC, Bioelect Syst Grp, Kapeldreef 75, Louvain, Belgium
[2] Katholieke Univ Leuven, MICAS, Louvain, Belgium
[3] MINATEC, CEA LETI, Grenoble, France
[4] Toumaz Technol Ltd, Oxford, England
[5] Imperial Coll London, Inst Biomed Engn, London, England
[6] Cochlear Technol Ctr, Mechelen, Belgium