Acoustics inventions 03/06

20060065474 - Soundproof cover: The present invention provides a soundproof cover having: a sound absorbing material; and a skin material adhesively provided on a surface of the sound absorbing material, wherein the skin material has a material having at least one of air permeability or flexibility....

20060065475 - Acoustic device: In an acoustic horn of the type wherein a resiliently flexible membrane is stretched across an edge of a tube and vibrated by pressurized fluid forced between the tube edge and a first surface of the membrane into the tube, a positionally adjustable end cap is disposed over the membrane...

20060065476 - Speaker system: A speaker system which transmits sound to a listening area by reflection, the speaker system including at least one speaker enclosure comprising an enclosure housing at least one speaker and a device for reflecting sound into the listening area....

20060065477 - Muffler: A muffler is disclosed. In the muffler a throttling device that is controlled by the energy of the airflow to be muffled is provided in a pipeline of the airflow that needs to be muffled. The muffler is adjusted by itself according to random variety of the pulsing airflow, and...

20060065478 - Compressor sound suppression: A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler....

20060065479 - Resonator: A resonator is arranged in an intake system including a pipe section for partitioning an intake port from an intake passage that communicates the intake port with a combustion chamber of an engine, the resonator including: a branch pipe having one end branching to the pipe section and the other...

20060065480 - Muffler and heat shield assembly: A muffler assembly includes an outer shell defining an internal cavity that extends between first and second ends. A first end cap is attached to the first end and a second end cap is attached to the second end. The first and second end caps provide a substantially enclosed internal...

20060065482 - Acoustic material with liquid repellency: Disclosed herein is a nonwoven acoustic insulating material which also provides repellency to water and low surface tension fluids. Also disclosed is a method for attenuating transmitted sound and repelling fluids which includes providing a nonwoven acoustic insulating material, the nonwoven acoustic insulating material including at least one nonwoven web...

20060065481 - Perforated hard trim for sound absorption: A perforated hard trim construction for incorporation into a an automobile interior with sound absorbing properties is provided. In one variation, the perforated hard trim construction includes a non-perforated metal component and a perforated hard trim component having a plurality of openings and connected to the non-perforated metal component. The...

20060065483 - Baffle with flow-through medium: There is disclosed a baffle having a medium that allows a fluid such as air to flow therethrough....

20060054379 - Sound box vibration-proof seat: A sound box vibration-proof seat comprises a top center having a tapered portion at one end thereof; another end of the top center being a stud; the stud being installed with a locking sleeve, a washer, a locking nut and a buckling nut; a seat pad having a recess at...

20060054380 - Acoustic absorbers for use with computer cabinet fans and other cooling systems: Systems and methods for absorbing acoustic noise generated by computer cabinet cooling fans are described herein. In one embodiment, an acoustic absorber for use with a fan carried by a computer cabinet in a room includes a first acoustic panel spaced apart from a second acoustic panel. The first acoustic...

20060054381 - Exhaust heat recovery muffler: The exhaust heat recovery muffler includes a muffler unit having the outer surface thereof covered, an exhaust heat recovery unit disposed integrally with the muffler unit, and a switching valve that switches the flow of exhaust gas into the muffler unit and into the exhaust heat recovery unit. An outer...

20060054382 - Acoustic fluid machine: In an acoustic resonator, an actuator allows a piston to reciprocate axially at very small amplitude at high speed. Owing to pressure fluctuation in the acoustic resonator involved by reciprocal motion of the piston, fluid is sucked into and discharged from the acoustic resonator via a valve device at the...

20060054383 - Acoustic fluid machine: A piston is reciprocated axially at high speed at very small amplitude by an actuator in the larger-diameter base of an acoustic resonator. According to pressure fluctuation in the acoustic resonator involved by reciprocal motion of the piston, fluid is sucked into and discharged from the acoustic resonator via a...

20060054384 - Automobile muffler with high flow rate: A sound attenuating exhaust muffler for an internal combustion engine is disclosed. The muffler has a body casing with an exhaust inlet at one end and an exhaust exit at the other end. Internally, three partitions define four serial chambers with a sound absorbing column located in the third chamber....

20060054385 - Two layer pumpable sound deadener: A two layer sound deadening material is formed from pumpable material applied through a pair of extrusion heads mounted on a single mount. A robot, used in high speed mass production automotive assembly lines, moves the door panel relative to the stationary extrusion heads to allow the simultaneous application of...

20060048996 - Discharge gas check valve integral with muffler: A compressor muffler includes a housing having an inlet end and an outlet end. A baffle arrangement extends from an interior surface of the housing. The baffle arrangement includes a surface capable of reflecting compressed fluid to attenuate noise. A valve assembly is disposed inside the baffle arrangement. The valve...

20060048997 - Acoustical and firewall barrier assembly: The present invention provides an acoustical firewall attenuating assembly. The assembly includes a first frame assembly having a first plate, a second plate and a first plurality of elongate members spaced from one another and extending between the first plate and the second plate. A structure is spaced from the...

20060042868 - Customized hearing protection earplug and method for manufacturing the same: The invention relates to a hearing protection earplug (10) to be worn at least in part in a user's ear canal, comprising a shell (12) having a outer surface individually shaped according to the measured inner shape of the user's outer ear and ear canal, and a functional member (20,...

20060042865 - Customized hearing protection earplug with an acoustic filter and method for manufacturing the same: The invention relates to a hearing protection earplug, comprising a hard shell (10) having an elasticity of from shore D 85 to shore D 65 and having an outer surface individually shaped according to the measured inner shape of the user's outer ear and ear canal for being worn at...

20060042867 - Hearing protection earplug and method for manufacturing such an earplug: The invention relates to a hearing protection earplug for being worn at least in part in the ear canal (28) of a person, comprising an integral shell (10) having an outer surface shaped for fitting at least in an outer part of the person's ear canal, an outer opening (18)...

20060042866 - Hearing protection earplug, use of such an earplug and method for manufacturing such an earplug: The invention relates to a hearing protection earplug, comprising a shell for being worn at least in part in the ear canal of a user and a faceplate (12) at the outer end of the shell or within a cavity of the shell having an outer opening, wherein the faceplate...

20060042869 - Method of measuring amount of substances in an ambient noise environment: Embodiments of the invention include methods, devices, and systems that measure a volume of substance in a noise environment....

20060042870 - Speaker, speaker module and electronic apparatus using this: A speaker system having a structure in which the room surrounding the first diaphragm and the room adjacent to the second diaphragm are acoustically coupled. The second diaphragm has coating on a surface. Applying the coating to the second diaphragm enhances the reliability and performance of the speaker system. Besides,...

20060042871 - Exhaust device for vehicle engine: An exhaust device includes an exhaust pipe connected at its upstream end to a cylinder head of the engine and an exhaust muffler connected to the downstream end of the exhaust pipe for suppressing the generation of noise from a heat insulating cover that covers a part of the exhaust...

20060042872 - Shell main body for muffler: The shell main body for a muffler includes an inner shell in a cylindrical shape with a cross-section of an imperfect circle defined by small arc portions alternating with large arc portions; and an outer shell wrapping the inner shell and formed in a cylindrical shape similar to the inner...

20060042873 - Apparatus for transmitting sound in a motor vehicle: An apparatus for transmitting sound in a motor vehicle having a housing (1) with an inner partition (2), which together define two separate subspaces (3, 4). A transmission valve (6) which separates the two subspaces (3, 4) is provided in a pivot bearing opening (9) in the partition (2) and...

20060042874 - Acoustical and firewall barrier assembly: The present invention provides an acoustical firewall attenuating assembly. The assembly includes a first frame assembly having a first plate, a second plate and a first plurality of elongate members spaced from one another and extending between the first plate and the second plate. A structure is spaced from the...

20060042875 - 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 which lateral supports are received, like a drawer, by two wooden rails (6), section T. The two wooden...