Underwater Soundtransducer Calibration Facility for the 10- to 4000-Hz Frequency Range at Hydrostatic Pressure to 10,000 Psig

摘要

A new controlled-environment facility operating on the principle of active-impedance termination in a rigid-walled tube now provides the means of calibrating a wide variety of underwater sound transducers in the increasingly important frequency range 10 to 4000 Hz at static pressure to 10,000 psig and temperature from 3 to 45C. This report describes the theory, limitations, and mechanical features of the facility and presents examples of both primary and secondary calibrations of transducers in the tube and in a free field. (Author)