1. Department of Speech, Hearing and Phonetic Sciences, University College London, Chandler House, 2 Wakefield Street, WC1N 1PF, London, United Kingdom
2. Laboratoire des Systèmes Perceptifs, Ecole Normale Supérieure, Centre National de la Recherche Scientifique, Université Paris Sciences et Lettres, 29 Rue d'Ulm, 75005, Paris, France
3. Department of Otolaryngology/Head and Neck Surgery, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, USA