Fluidic element noise and vibration control constructs and metho

Details Fluidic element noise and vibration control constructs and metho Fluidic element noise and vibration control constructs and metho

1996-09-17

1999-12-28

Chang, Vivian

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within cabin or compartment of vehicle

381 717, A61F 1106

Patent

active

060091800

ABSTRACT:
Fluidic constructs, including grouped stacks of fluidic elements, that provide countersound to control sound in a noisy environment, prevent radiation of sound from vibrating surfaces, reduce sound-induced vibration of surfaces, and absorb sound that might otherwise impact on surfaces, are provided. These constructs may have a wide range of geometries for specific applications, but generally include a face plate on one side, and a back plate on the other side. Supply ports on the back plate provide a supply of fluid that flows through the construct, while undergoing acoustic modulation through fluidic amplifiers. The face plate includes input ports that sense sound waves to be controlled, and transmits this sound to influence the acoustic modulation of the supplied fluid. The construct produces an amplified output, having sound out of phase with the sound sensed by the input ports, at output ports on the face plate in a sufficient volume to substantially neutralize incoming sound waves, or reduce sound radiation from an object. Any sound produced by the construct of the invention that is substantially in phase with sound to be neutralized is dumped at a sufficient distance from the produced countersound to minimize interference.

REFERENCES:
patent: 4091892 (1978-05-01), Hehmann et al.
patent: 4747467 (1988-05-01), Lyon et al.
patent: 5374025 (1994-12-01), Whelpley et al.

Affiliated with

Also associated with

Rating

Fluidic element noise and vibration control constructs and metho does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluidic element noise and vibration control constructs and metho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluidic element noise and vibration control constructs and metho will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2387758