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Acoustics

20130112495 - Marine seismic source: The invention concerns a device for emitting seismic waves designed to operate by being towed by a vessel, characterized in that it comprises means capable of discharging compressed air under high pressure into water, to generate a bubble (44) of a general annular shape.... Agent: Cggveritas Services Sa

20130112496 - Methods and devices for electromagnetically tuning acoustic media: An acoustic material can be electromagnetically tuned to produce alterations in its acoustical properties without physical contact. The acoustic material should contain a periodic structure and a medium that has acousto-elastical properties that can be altered through the application of electromagnetic radiation. Changes in volumetric properties such as density result... Agent: The University Of North Texas

20130112497 - Turbojet engine nacelle: A turbojet engine nacelle includes at least one nacelle element having a wall delimiting a main flow channel. The flow channel has a variable flow passage section. The cross-sectional area of at least one first area of the channel is greater than that of at least one second area of... Agent: Aircelle

20130112498 - Exhaust device of engine: An exhaust device of an engine includes an exhaust pipe connected to the engine, a silencer connected to the exhaust pipe and structured of an outer cylinder and an inner cylinder in which plural holes are formed, and a sound absorbing material disposed in a space formed between the inner... Agent: Suzuki Motor Corporation

20130112499 - Acoustic composite: An acoustic composite containing at least a first acoustically coupled non-woven composite and a second acoustically coupled non-woven composite, each acoustically coupled non-woven composite containing a non-woven layer and a facing layer. The non-woven layer contains a plurality of binder fibers and a plurality of bulking fibers and has a... Agent:

20130105243 - Acoustic reflectors: An acoustic reflector primarily for underwater use comprising a shell surrounding a core in which holes are provided in the shell to allow air and water freely to enter and leave the interior of the shell when the reflector is immersed in water. Various embodiments are described including the use... Agent:

20130105244 - Acoustic enclosure for loudspeakers: Acoustic enclosure for mounting loudspeakers (1) that contains a certain number of curved-profile guides (8) arranged radially beside one another at a specific distance and forming a ring (7), between which the sound from the loudspeaker is propagated from the central space (6) to the outer ring (9), which it... Agent:

20130098704 - Seismic source with positive reflection plate and method: A marine source sub-array and method for generating a pressure wave in a body of water. The marine source sub-array includes a float configured to float in the body of water; base plates connected to the float through cables; plural individual source elements connected to the base plates and configured... Agent: Cggveritas Services Sa

20130098705 - Hearing assistance device: A device structured to assist the hearing of a user by being removably connected to and disposing a user's ear in an enhanced hearing orientation. The device includes an elongated base, which may be disposable, and has a sufficient length to be disposed in an operative position behind the user's... Agent:

20130098706 - Occlusion effect mitigation and sound isolation device for orifice inserted systems: Methods and devices for sound isolation are provided. A sound isolation device includes an expandable element and an insertion element. The expandable element is operatively attached to the insertion element. The expandable element includes an expanding medium, where the pressure of the expanding medium is varied to vary a sound... Agent: Personics Holdings Inc.

20130098707 - Mounting structure for dash silencer: In order to mitigate transmission to the passenger compartment of noise generated in the engine compartment, a dash silencer is installed on the passenger-compartment-side surface of the dash panel of an automobile, wherein the mounting operation is facilitated by improving the mounting structure for the dash silencer. A stud pin... Agent: Howa Textile Industry Co., Ltd.

20130092469 - Systems and methods for producing directed seismic waves in water: A disclosed seismic source assembly includes a body having a cavity and a seismic source positioned in the cavity. The cavity is in fluid communication with the water via an aperture oriented in a first direction. One or more surfaces of the body define a water contact significantly larger than... Agent: Pgs Geophysical As

20130092470 - Expander ear tip: Methods and apparatuses for wearing audio products are disclosed. In one example, an apparatus for delivering sound to an ear includes a flexible material shaped to fit within an outer ear. The apparatus includes a movable member in contact with an inner surface of the flexible material, the flexible material... Agent: Plantronics, Inc.

20130092471 - Active sound absorbers: A risk of damage by condensate in the back volume (13) can be reduced by at least one condensation line (14), which fluidically connects the back volume (13) with the front volume (12), in which vapour contained in the exhaust gas condenses, and which directs the condensate which occurs to... Agent: J. Eberspaecher Gmbh & Co. Kg

20130092472 - Acoustic attenuator for an engine booster: An acoustic attenuator 20 for an engine booster such as a turbocharger 10 for an engine 4 is disclosed in which the acoustic attenuator 20 includes an attenuator chamber 28 in which is located at least one absorption media 140. The acoustic attenuator 20 is located adjacent an inlet port... Agent: Ford Global Technologies, LLC

20130092473 - Panel assembly for traffic noise barrier wall: A panel assembly for a traffic noise barrier wall of the type including opposing slots formed in pairs of vertically-mounted posts is disclosed. In some embodiments, the panel assembly includes the following: a sheet of material having top, bottom, and side edges forming a perimeter of the sheet, the sheet... Agent: