Equipment and Procedure for Standardized Projector Performance Tests
[Technical Report, Formal Report]
NAVAL RESEARCH LAB WASHINGTON DC
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This report covers work carried on aboard the U.S.S. SEMMES by personnel of the Naval Research Laboratory from 6 to 18 November 1939. The objective of the work was to provide the SEMMES with calibrated sound intensity measuring equipment for measuring in absolute units the performance of underwater sound projectors submitted by manufacturers for test.