Abstract: Methods and transducers for producing acoustical signals having a spiral wavefront with omnidirectional magnitude and a phase that varies with angle and transducers for producing broadband omnidirectional reference signals for underwater navigation and communication.
Type:
Application
Filed:
September 19, 2011
Publication date:
September 20, 2012
Applicant:
BTECH ACOUSTICS LLC
Inventors:
David Alan Brown, Boris Aronov, Corey L. Bachand