HYDROPHONE ADVISORY COMMITTEE 



The Hydrophone Advisory Committee was the name which soon came to be used for the Committee on 

 Standards and Calibration appointed by the Coordinator of Research and Development, April 1942. for the 

 following purpose: to assist in establishing calibration techniques, reference levels, and standard definitions 

 and terms to be used generally by all groups making underwater sound measurements of interest to the 

 Navy. 



Shortly after the organization of this committee. Dr. Robert S. Shankland was selected to be its chairman. 

 While from time to time the personnel of the committee changed, in general the following organizations 

 were represented at meetings and were otherwise active: 



Office of the Coordinator of Research and Development (now Office of Research and Inventions) 



Bureau of Ships (940) 



Naval Ordnance Laboratory 



Naval Research Laboratory 



Division 6: 



Columbia University Division of War Research at the U. S. Navy Underwater Sound Laboratory, 

 Harvard Underwater Sound Laboratory, Massachusetts Institute of Technology Underwater Sound 

 Laboratory, University of California Division of War Research at the U. S. Navy Radio and Sound 

 Laboratory, Underwater Sound Reference Laboratories of Columbia University Division of War 

 Research 



Bell Telephone Laboratories, Inc. 



Brush Development Company 



Radio Corporation of America 



Submarine Signal Company 



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