- Institute of Electrical and Electronics Engineers (6)
- Southern African Conference on Communications and Signal Processing (3)
- European Association for Signal Processing (1)
- IASTED International Symposium on Signal Processing and Its Applications (1)
- IEEE Workshop on Speech Coding for Telecommunications (1989 : Vancouver, B.C.) (1)
- Institution of Electrical Engineers (1)
- International Conference on Digital Signal Processing (1)
- Queensland University of Technology. Signal Processing Research Centre (1)
- The University of Patras (1)