IEEE History Center: Maurice Bellanger | 
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Maurice Bellanger Oral History Maurice Bellanger was born in 1941 in France. He received his undergraduate degree in electronics engineering in 1965 from Ecole Nationale Superiéure Des Télécommunications. He joined Télécommunications, Radioélectriques and Téléphoniques [TRT], a subsidiary of Phillips Communications, in 1967 and since then has worked on digital signal processing and its applications in telecommunications. He returned to graduate school and received his doctorate at the University of Paris-Orsay in 1981. At TRT, he rose to become head of the telecommunications department by 1983 and from 1988 to 1991 served as the scientific director of the company. He accepted a University appointment as Professor of Electronics at Conservatoire National Des Arts et Métiers [CNAM] in 1991. His major technical contributions include the development of an integrated FIR filter in 1970 and a 60 channel PCM-FDM Transmultiplexer in 1974. He holds 16 patents in the field and is the author of two textbooks on signal processing Digital Signal Processing: Theory and Practice, (John Wiley, 2nd ed 1989) and Adaptive Digital Filters and Signal Analysis (Marcel Dekker, 1987). His professional activities have included editorship of the ASSP Transactions and he is a past president of EURASIP, the European Association for Signal Processing. He has been a member of the IEEE since 1973 and in 1983 was elected a Fellow [fellow award for "contributions to the theory of digital filtering, and the applications to communications systems"]. His IEEE awards include the Leonard Abraham Paper Award of the Communications Society The bulk of the interview concerns Bellanger's work at TRT on digital filtering, especially for speech communications. He describes the application, independent of American researchers, of the famous Cooley-Tukey paper on the FFT. Bellanger comments on the impact of rapid technical innovation on signal processing, in terms of the development of research tools and the rapid obsolescence of some fruitful research. At the end of the interview, Bellanger discusses the dilemma facing senior researchers saddled with management responsibilities that take them out of the lab.
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