The USRD Type F39A 1-kHz Underwater Helmholtz Resonator.

摘要

A reliable,small,lightweight sound source capable of producing a sound pressure level of 170dB re 1 microPa at 1kHz using the principle of a Helmholtz resonator was designed and built to satisfy a requirement of the Naval Ship Research and Development Center for a transducer to be used at 300-m depth in the ocean. (Author)