Diaphragm for use with an electro-acoustic transducer and method

Digital air gun source controller apparatus and control method

Digital transducer

Directional electro-acoustic transducers comprising a sealed sel

Directional flextensional transducer

Directional hydrophone suitable for flush mounting

Directional modular linear hydrophonic antenna

Directional sound signaling device

Directional transducer

Directional underwater acoustic pulse source

Disappearing baffle for sonar arrays

Discharge circuit, and use thereof in a method and in apparatus

Discrete amplitude shading for lobe-suppression in discrete arra

Displacement current method and apparatus for remote...

Distributed acoustic sensor

Distributed array hydrophone

Distributed, soft-bodied, towable, active acoustic system

Double mass-loaded high power piezo-electric underwater transduc

Double piston acoustic transducer with selectable directivity

Doubly resonant push-pull flextensional