Back to results
US 2012/0269037 A1Published application
Broadband sound source for long distance underwater sound propagation
AssigneeWoods Hole Oceanographic Institution
InventorAndrey K. Morozov
Life of this patent
Estimating the term…
Abstract
The systems described include a light-weight, low frequency (200 Hz-1000 Hz), broadband underwater sound sources that comprise an inner resonator tube with thin walls tuned to a certain frequency surrounded by a shorter, larger-diameter, lower frequency tuned outer resonator tube that has an acoustic source suspended off-center inside the inner resonator tube.
Claims16
An underwater sound source, comprising
- a resonator assembly, including
- an outer resonator tube having a first open end, a second open end, and a sidewall with a first thickness extending therebetween, and
- an inner resonator tube, at least partially disposed within the outer resonator tube, having a first open end, a second open end, a sidewall with a second thickness extending therebetween,
- wherein the inner resonator tube is offset from the outer resonator tube along a longitudinal axis, such that the first end of the inner resonator tube is disposed within the outer resonator tube and the second end of the inner resonator tube is disposed outside of the outer resonator tube, and
- wherein the second thickness is less than the first thickness;
- and
- an acoustic driver, disposed within the inner resonator tube and the outer resonator tube.
4 more elements
A method for generating an acoustic signal underwater, comprising deploying a broad band sound source configured underwater, the sound source having
- a resonator assembly configured to receive fluid therein, including
- an outer resonator tube having a first open end and a second open end, and
- an inner resonator tube, at least partially disposed within the outer resonator tube, having a first open end and a second open end,
- wherein the inner resonator tube is offset from the outer resonator tube along a longitudinal axis, such that the first open end of the inner resonator tube is disposed within the outer resonator tube and the second open end of the inner resonator tube is disposed outside of the outer resonator tube;
- and
- an acoustic driver, disposed within the inner resonator tube and the outer resonator tube;
- and
- applying an electrical signal to the acoustic driver, thereby causing the acoustic driver to vibrate;
- wherein the vibrating acoustic driver excites the fluid and causes the resonator assembly to vibrate and thereby resonate at frequencies across a range of 200 Hz to 1000 Hz.
6 more elements
Dependencies are inferred from the claim text.