Associate Editor for the IEEE Transactions on Speech and Audio Processing, March 2002-February 2006
Associate Editor for the IEEE Transactions on Signal Processing, since Feb. 2006
Member of the IEEE Technical Committee on Audio and Electroacoustics
Member of the IEEE Technical Committee on Speech Processing
Member of the Audio Engineering Society (AES) Technical Committee on Coding of Audio Signals
Guest Editor, EURASIP Journal on Applied Signal Processing, Special Issue on Multirate Systems and Applications, since October 2005.
Technical Program Committee Member for the 14th European Signal Processing Conference 2006.
Workshop Chair and Organizer for the AES Workshop "Next Generation Audio Communications", 119th AES Convention, New York, 7.-10. Oktober, 2005
Member of the technical committee, review committee and session chair for several sessions at the International Conference on Acoustics, Speech, and Signal Processing (ICASSP) and the Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)
Publication Chair for the 2002 IEEE International Workshop on Multimedia Signal Processing
ISO/MPEG SC29/WG11 participation in lossless audio coding standardization