He gained experience in electronic circuit design for high-performance analytical instruments at the
Bell & Howell Research Center in California from 1958 to 1964. During this period, he took a one-year visiting fellowship at the Norwegian Technical University. After a working visit to Japan in 1964, he moved to Australia, where he got a part-time job at the
University of Sydney as a teaching assistant in the electronics lab. He became interested in loudspeaker analysis and measurement and met
A. N. Thiele who was lecturing at the university. He was awarded a Ph.D. degree in 1972. Upon completion of his Ph.D., he published a series of nine papers—now considered classics—on the low-frequency analysis of closed-box, vented and passive radiator loudspeaker systems. He taught for a number of years at that university, but returned to industry in 1986 as Head of Research at
KEF Electronics Ltd. in
Maidstone,
England until 1993. He then joined Harman International based in their Martinsville, Indiana, USA facility. ==References==