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Biographical entry Challis, Louis A. (1936 - 2017)


3 June 2017
Sydney, New South Wales, Australia
Acoustical engineer


Louis Challis was regarded as Australia's leading acoustical engineer. His aim was to make unwanted noise and vibration inaudible and good noise crystal clear. He qualified in electrical engineering and architecture at the University of Sydney and worked in underwater acoustics for the Royal Australian Navy, and for OTC, before establishing the consulting firm which he ran for 40 years. In 1970 he designed and developed the audio-tactile push-button signalling system for pedestrian crossings which is now used world-wide. Major infrastructure projects for which he provided acoustic designs include Parliament Houses in Canberra, Sydney, Brisbane and Port Moresby, and the Sydney Harbour Tunnel. Challis was specialist advisor on the forensic assessment of tapes for ASIO and the New South Wales Government. His work was recognised with a number of awards including 12 Engineering Excellence awards from Engineers Australia and Consult Australia.



1966 - 2006
Career position - Director, Louis A. Challis & Associates
Award - Distinguished Corresponding Member, Institute of Noise Control Engineering, U.S.A
1998 - 2017
Award - Honorary Fellow, Institution of Engineers, Australia
2000 - 2017
Award - Fellow, Australian Academy of Technological Sciences and Engineering
Award - Member of the Order of Australia (AM) for service to engineering as a pioneer in environmental and architectural acoustic engineering, particularly the development of noise standards, acoustic planning and design of landmark buildings, and advancements in environmental noise testing
Award - Centenary Medal for service to Australian society in technological industries

Published resources

Journal Articles

  • Anon, 'Louis Challis a leading acoustical engineer', Focus, 203 (2017), 53. Details


Helen Cohn