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8184820 |
Indirect acoustic transfer control of noise
A noise control system is directed to the path along which the noise is transmitted from the source of the noise being generated to the receiver of the noise in the passenger compartment of an...
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8172037 |
Coating for acoustic treatment that integrates the function of hot-air treatment of frost
The invention relates to a coating for acoustic treatment at the surface of an aircraft, in particular at the leading edge such as the air intake of an aircraft nacelle, said coating including an...
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8157052 |
Acoustic structure
In an acoustic structure, sound absorbing effect is achieved by interference between incident waves falling in an opening portion and reflected waves radiated from the opening as a result of...
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8144889 |
Noise control system using smart materials
A noise control system operable within a box-like structure provided by the dual bulkhead plenum of the vehicle dashboard positioned within the transfer path along which the noise is being...
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8020662 |
Acoustic base tray for a dishwashing appliance, and associated method
An apparatus and associated method for attenuating noise generated by a dishwashing appliance in operation is provided herein. During operation a dishwasher and its components generate...
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8006802 |
Acoustic structure and acoustic room
In a hollow member, a portion of a hollow region adjoining and communicating with an opening portion is constructed as an intermediate layer. The intermediate layer is constructed in such a manner...
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7997384 |
Multilayer board for reducing solid-borne sound
A multilayer board for reducing solid-borne sound radiation with improved mechanical stability when subjected to a load, comprising a first cover layer, a second cover layer, and at least one core...
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7967108 |
Acoustic liners
An acoustic assembly for a fan casing of a turbofan engine is made up from acoustic liner panel components which each comprise a body and a backing sheet. The body is an integral injection moulding...
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7963364 |
Porous metal bodies used for attenuating aviation turbine noise
A structural element used for attenuating aviation turbine noise is provided with pores (1, 2) embodied in the form of cylindrical channels which are open on the first ends inside the turbine...
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7938228 |
Process for producing sound absorber and produced by the process, sound absorber and sound absorbing structure
A process for producing a sound absorber having skin layers constituting front and back surfaces and, interposed between the skin layers, a void layer having a plurality of pin formed holes, each...
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7931117 |
Glazing unit with improved vibro-acoustic damping properties, method for making such glazing unit and method for acoustic protection in a vehicle passenger compartment
A glazing unit with improved vibro-acoustic damping properties, including at least one glass sheet and at least one vibro-acoustic damping strip fastened onto at least one of faces of the glass...
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7870931 |
Sound-absorbing insulation element with strengthening embossments
The sound-absorbing insulation element is used everywhere sound and/or heat sources have to be shielded, preferably in automotive engineering as a heat shield. The insulation element comprises at...
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7854298 |
Acoustic septum cap honeycomb
An acoustic structure that includes a honeycomb having cells in which septum caps are located. The septum caps are formed from sheets of acoustic material and include a resonator portion and a...
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7798285 |
Acoustic barrel for aircraft engine nacelle including crack and delamination stoppers
An acoustic inner barrel for an aircraft engine nacelle inlet is constructed from a composite material and is formed as a single, 360-degree annular segment. The barrel includes an inner skin, an...
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7743884 |
Sandwich panel for sound absorption
An aircraft cabin panel for sound absorption, with a sandwich construction, comprising a core layer that comprises a plurality of tube-like or honeycomb-like cells that extend in an open manner...
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7721844 |
Vibration damping apparatus for windows using viscoelastic damping materials
An improved vibration damping system is provided for use with window structures. The window damping system employs both air-film damping technology and viscoelastic damping materials to increase...
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7721846 |
Sound absorbing material
Sound absorbing board (10) is made from recycled high density foam granulate (12) that has been mixed with a binder (14) and consolidated under pressure. Pores (16) are present in spaces between...
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7721847 |
Acoustic panel
An acoustic panel is provided with a plurality of grooves in a front face and at least one well in a back face. The well is defined by a first end wall and an opposing second end wall and opposing...
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7712579 |
Floor silencer
It is an object of the present invention to provide a floor silencer that has good transport efficiency due to an ability to be transported in a flat state, and can be assembled to a floor panel of...
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7703575 |
Three-dimensional tessellated acoustic components
A set of acoustic components having complementarily tessellated shapes such that they may be nested together to constitute a rectangular parellelepiped, suitable for efficient storage and shipping....
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7677359 |
Sound absorbent
Sound absorbent (1) of a hard material, such as metal, glass, hard plastic or composites thereof, for absorption of acoustic waves by friction of viscous flow, essentially in the frequency range...
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7670671 |
Dust, water and sound barrier including a witness line for ease of application to a vehicle door
A laminated barrier is provided that can be easily attached to the frame of a vehicle door. The barrier reduces the passage of water, dust and sound into and through the vehicle door. The barrier...
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7661511 |
Board building material, board building material producing method, board building material installation method
Perforations of a board for building material are formed by a number of recesses (13), or a number of recesses (13) and through-holes (12). A bottom face (16) of the recess forms a face for...
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7654364 |
Sound absorbing structure
A sound absorbing structure having excellent in sound absorbing performance, which is capable of achieving 0.4 or higher in the sound absorbing coefficient even in the case where a perforated panel...
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7604094 |
Acoustic scatterer
An acoustic scatterer element (10) incorporates a plurality of convex surfaces (38.1, 38.2) has a plurality of associated curvatures in a corresponding plurality of different directions. A...
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7594365 |
Heating floor system
Disclosed herein is a floor sound-insulating type heating system in which a floor sound-insulating structure for reducing the transmission of an impact sound from upstairs to downstairs in an...
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7571790 |
Sound absorption block and method of constructing the same
A sound absorption block installed at a music box, a gymnasium, a studio, etc. to prevent sounds from being heard outside, and a method of constructing the same are disclosed. The present invention...
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7549507 |
Duct wall structure
The invention relates to an inner heat insulating and inner sound insulating structure of an HRSG duct wall in which a turbine combustion high temperature and high velocity gas whose temperature is...
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7520370 |
Combination acoustic diffuser and absorber and method of production thereof
The present invention relates to a combination acoustic diffuser and absorber and method of production thereof. The diffuser has an acoustically reflective surface that may be made by the vacuum...
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7520369 |
Soundproofing panel with beads, and a method of manufacture
A soundproofing panel having a core sandwiched between a solid wall and a porous wall. The core being connected to the walls and having partitions extending in the thickness direction between the...
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7510052 |
Acoustic septum cap honeycomb
An acoustic structure that includes a honeycomb having cells in which septum caps are located. The septum caps are formed from sheets of acoustic material and include a resonator portion and a...
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7503424 |
Vehicle cab noise suppressing system
A vehicle cab noise suppressing system includes a cab interior panel having an opening exposed to acoustic noise in the cab, an acoustic resonator chamber, and a conduit communicating the resonator...
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7497301 |
Tubular acoustic silencer
An acoustic silencer is provided by a tubular member extending along an axis and having a hollow interior defining an axial flow path therethrough. The tubular member has a sidewall with an...
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7484592 |
Sound attenuation panel comprising a resistive layer with reinforced structural component
A sound attenuation panel includes a resistive layer with a reinforced structural component, comprising at least a honeycomb structure (1) flanked, on one side, with a resistive layer (2)...
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7469770 |
Anechoic visco-thermal liner
A liner assembly includes a plurality of aligned passages providing a large open area combined with openings much smaller than a length of the passages. The plurality of passages are disposed...
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7464791 |
Acoustic mats and methods for making the same
Acoustic mats include a face layer and an absorptive layer having first and second surfaces wherein the second surface of the absorptive layer may be secured to said face layer. The mat further...
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7461719 |
Resonator performance by local reduction of component thickness
Aspects of the invention are directed to a system for improving the damping performance of an acoustic resonator. According to aspects of the invention, a resonator, such as a Helmholtz resonator,...
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7451855 |
Acoustic absorbing device
An acoustic absorbing device includes a housing having a chamber formed by an outer peripheral wall and a bottom wall, a hood engaged into the housing, an absorbing member engaged into the hood,...
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7434660 |
Perforated soundproof structure and method of manufacturing the same
A perforated soundproof structure is formed by oppositely arranging an external plate 1 and an internal plate 2 having a number of through-holes 2a. The board thickness, hole diameter and open area...
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7428948 |
Hybrid amplitude-phase grating diffusers
A room acoustic diffuser exploits interference, by reflecting waves out-of-phase with the specular energy, making it possible to diminish specular energy. This is achieved by using a diffuser based...
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7413053 |
Acoustic resonator with impingement cooling tubes
Aspects of the invention are directed to an acoustic resonator with improved impingement cooling effectiveness. The resonator includes a plate with an inside face and an outside face. A plurality...
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7401682 |
Architecture for an acoustic liner
An acoustic liner 20 includes a remote panel 26, a perforated proximate panel 22 transversely spaced from the remote panel and one or more partitions 32 spanning across the space between the...
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7364014 |
Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies
A sound absorbing body 40 has a molded body 44 including two unexpanded layers 41, 42 and an expanded layer 43 having a number of voids and held between these unexpanded layers 41, 42, a plurality...
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7322441 |
Extended bandwidth folded well diffusor
An extended bandwidth folded well diffusor extends the diffusion bandwidth of a shallow, asymmetric diffusor by incorporating maximum-depth, folded L-shaped, half-width wells on both ends (sides)...
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7318499 |
Noise suppression structure and method of making the same
An integrated noise suppression acoustic panel includes a back plate, a face plate, and a bulk foam absorber disposed between the back plate and the face plate. The bulk foam absorber is formed of...
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7314114 |
Flat panel diffuser
A device including a membrane having first and second faces; a first substrate disposed on the first face of the membrane and having (i) a plurality of first absorptive regions and (ii) a plurality...
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7311175 |
Acoustic liner with bypass cooling
An acoustic liner 20 includes a remote panel 26, a proximate panel 28 transversely spaced from the remote panel and a resonator chamber 34b residing between the panels. Perforations 38 penetrate...
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7308965 |
Noise abatement wall
A noise-absorbing device includes a substantially flat base and embossed and/or hollow elements each including at least one recess. This base reveals with the embossed and/or hollow elements, a...
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7261182 |
Wide band sound diffuser with self regulated low frequency absorption and methods of mounting
The present invention relates to an acoustical diffuser device, said apparatus comprising the main body from FIG. 1 and two lateral rigid supports (5), glued to the inside of the said diffuser...
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7182172 |
Sound insulation system
A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart...
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