Bernd J. Kröger is a physicist (M.Sc.) and phonetician (Ph.D.). He wrote his doctoral thesis on the syntheses of female voice quality and his habilitation thesis on phonetic aspects of speech production at the Philosophical Faculty of the University of Cologne. He has been a senior researcher and professor in the Medical Faculty of RWTH Aachen University since 2001. His major research topic is the development of a theory of speech processing and speech acquisition from a neurobiological perspective. Bernd J. Kröger has published over 100 papers in international journals and books. An important result of his work is, among other things, the development of a computer implemented neural model of speech processing and speech acquisition. Trevor Bekolay is a computer scientist (M.Math) and theoretical neuroscientist (Ph.D.). He wrote his master's thesis on unsupervised and supervised learning in the Neural Engineering Framework, and his doctoral thesis on a neural model of speech recognition and synthesis. He is a co-founder of Applied Brain Research Inc., and has worked there as a senior research scientist since 2016. He is the lead developer of the Nengo neural simulator, which has been used in hundreds of published research projects.