sociate editor of IEEE Signal Processing Letters. He has published nearly 100 papers on nonlinear and adaptive filtering, efficient implementation of DSP systems, detec- tion, estimation, beamforming, and wireless communications and image processing and their applications. Alan McGuire, M.Sc. British Telecommunications Plc Alan McGuire is a principal engineer at BT, leading a multidisciplinary team working on next-generation transport networks. He is also active in the standards arena, where he has made numerous contributions and has acted as editor on a variety of ITU-T Recommenda- tions concerning network architecture, control and management, optical networking, and Ethernet. Alan graduated from the University of St. Andrews in 1987 with a first in physics and earned his M.Sc. in medical physics one year later from the University of Aberdeen. He is a chartered engineer and chartered physicist, as well as a member of the Institute of Physics, a member of the IET, and a senior member of the IEEE. Rouzbeh Razavi, M.Sc. University of Essex Rouzbeh Razavi received his master's degree with distinction in telecommunications and information systems from the University of Essex in 2005. He is currently pursuing his research toward a Ph.D. at that university and since June 2006 has been a research officer on the IST European Project, MUSE. Rouzbeh has been a reviewer for various journals and has published more than 30 papers in scholarly journals and conference proceedings. He is the recipient of both a best-paper award and an outstanding-paper award from two inter- national conferences. Martin Reed, B.Eng., Ph.D., MIET, MIEE University of Essex Martin Reed is a lecturer at the University of Essex. He is also an active researcher in the fields of transmitting media over packet networks and traffic engineering in IP networks and has published more than 25 papers in the fields of network control and audio signal Contributors processing. Martin was an early experimenter in spatialized (multichannel) voice for multi- party c