Speech Quality of VoIP: Assessment and Prediction

Alexander Raake is Senior Scientist at Deutsche Telekom Laboratories, Berlin. Alexander has worked in the field of VoIP quality and related topics for almost seven years. Current research topics include service personalization, user expectation and the quality and usability of VoIP-based speech transmission systems, and virtual environments for multi-party communication and multi-modal systems. Since 1999 Alexander has participated in the standardization activities of the International Telecommunication Union (ITU-T) on transmission performance of telephone networks and terminals.