Wolfgang Hoeg, Dipl.-Ing., AES Fellow, Berlin, Germany, graduated from the University of Technology, Dresden, in electrical engineering and joined the RFZ (Research and Development Centre of Deutsche Post) in 1959. Since 1991 he has been with Deutsche Telekom, and became head of the division "Audiosystems" with Deutsche Telekom Berkom, Berlin. He has worked in various fields of audio engineering, such as two-channel and multi-channel audio, DAB and other new broadcast technologies. As a member of the standardisation bodies of OIRT, ITU-R and EBU, he was acting as a chairman of several project groups. He also contributed to the Eureka 147/DAB Working Groups and chaired the Task group DRC. After retiring from Deutsche telekom in 1999, he has become an audio consultant.

Thomas Lauterbach, Prof. Dr. rer. nat., Nürnberg, Germany, received his Diplom-Physiker degree and PhD from Erlangen University. In 1992 he joined Robert Bosch GambH, where he became involved with the development of DAB. In 1997 head became head of a multimedia systems development department. He was with several Eureka 147/DAB Working Groups, the German DAB platform and Euro-DAB/WorldDAB and contributed to ETSI. He also co-ordinated the MEMO (ACTS) project. Since 1997 he has been with the Georg-Simon-Ohm-Fachhochschule Nürnberg - University of Applied Sciences as a Professor of Physics. He is currently involved in the Digital Radio Mondiale (DRM) project. In 1996 he edited one of the first books on DAB in German.