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7610810 Methods for producing acoustic sources  
Embodiments include an acoustic source for use in a hemi-anechoic chamber comprising a source assembly and a waveguide assembly for producing sound outside of a measurement hemisphere and...
7601763 Diaphragm for speaker and manufacturing method thereof  
A diaphragm for a speaker is made by forming acrylic foam. As the material of the acrylic foam, using maleic anhydride and methacrylic amide are contained. Thereby, the coefficient of saturated...
7484589 Apparatus and method for reducing aircraft noise and acoustic fatigue  
An apparatus and method is provided for attenuating aerospace engine noise and unsteady pressure fluctuations associated with high velocity exhaust flows. The apparatus and method reduce acoustic...
7331950 Apparatus for containing noise generated by a pneumatically powered surgical instrument and related method  
A sound attenuating system is provided for pneumatically powered surgical instruments. In one aspect, the exhaust hose is formed of at least two dissimilar materials to impede the transmission of...
7241258 Passive vibration isolation of implanted microphone  
A system for reducing the vibration sensitivity of an implantable microphone without an equal or greater reduction in sound sensitivity. The system reduces non-ambient vibrations by placing at...
7214179 Low acceleration sensitivity microphone  
An implanted microphone is provided that has reduced sensitivity to vibration and attendant acceleration forces. In this regard, the microphone differentiates between the desirable and undesirable...
7204342 Sound focus speaker of gas-filled sound lens attachment type  
A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus...
7167415 Transducers for focusing sonic energy in transmitting and receiving device  
Ultrasonic transducers which include at least one internally directed generally concavely configured sonic energy radiating element which directs sonic energy toward at least one arcuate energy...
7156201 Ultrasonic rod waveguide-radiator  
The present invention comprises an ultrasonic resonant rod waveguide-radiator with at least three cylindrical sections, one of which is an entrance section having a planar entrance surface and...
6986348 Cough-a-lizer  
The germ and noise filter device is a disposable, hand held filter apparatus that covers the mouth of the user during the exhale phase of a cough. The device comprises: a body with a cavity that...
6834744 Speaker system  
This invention has been made to provide a speaker system capable of miniaturization and presenting a good sound quality. A speaker 15 is mounted on a printed circuit board 21 arranged inside a...
6830876 Acoustic resistor for hearing improvement and audiometric applications, and method of making same  
An acoustic resistor or damper and method of manufacturing the same is disclosed. The damper has mesh material and mounting material attached to the mesh material. The mounting material defines an...
6805219 Engine cover  
An engine cover has a cover body having a through hole penetrating both sides of the cover body in an area opposed to a resonant space in which resonant sounds are generated. An opening of the...
6799657 Absorptive/reactive muffler for variable speed compressors  
An absorptive and reactive muffler includes an annular flow path for the gas with the center of the annulus having a plurality of resonators which are in open communication with the downstream end...
6684977 Speaker retention assembly for an active noise control system  
An air introduction system ( 10 ) provides an active noise control system which includes a speaker assembly ( 28 ) in which the speaker support ring ( 36 ) is mounted to a speaker housing ( 32 )...
6619425 Soundproof cover  
A soundproof cover includes a sealing layer, a sound insulation layer, and a vibration inhibition layer. The sound insulation layer has a peripheral portion, is to be disposed so as to contact at...
6561312 Device for in particular acoustically uncoupled mounting  
An arrangement for acoustically uncoupled mounting of slightly vibrating components on an anchoring part has a first sleeve which is adapted to guide through an opening of a component, a mounting...
6533063 Video equipment speaker device with acoustic lens  
In video equipment, a video equipment speaker device that is almost invisible from a viewer and capable of placing, toward the front of the center portion of the screen, an acoustic image from a...
6527080 Passive system for speech enhancement  
A passive system for speech enhancement in a motor vehicle includes a headliner adapted to be disposed in an occupant compartment of the motor vehicle. The passive system also includes at least one...
6519348 Speaker apparatus and television set  
A first feature of the present invention is that the opening of a sound output port 3 b is smaller in area than the opening of a sound input port 3 a in a horn 3 . A second feature is that the...
6478109 Laminated composite panel-form loudspeaker  
A laminated composite panel-form loudspeaker consists of a peripherally stiffened laminated composite radiating panel on which a preselected number of transducers are mounted and a rectangular...
6435301 Apparatus for the redistriabution of acoustic energy  
An apparatus for the redistribution of acoustic energy is provided which comprises a lens having a reflective surface defined by the surface of revolution (R 1 ) of an elliptical arc (A 1 ) rotated...
6290140 Energy management system and method  
A method is provided for managing the energy usage of an energy consuming system adapted to determine the energy of a controlled space, the energy consuming system including a plurality of...
6216817 Damping structural substance and a damping coat forming method  
A vibration damped structure, which is excellent in vibration absorption and sound absorption effect, is provided by coating the surface of a structure to be damped with a mixture of molten...
6122386 Adjustable speaker system with reflector  
An adjustable speaker system includes a speaker enclosure having at least a forward facing surface, the speaker enclosure enclosing a speaker with a forward facing acoustic outlet from which sound...
6095281 Low noise air conditioner housing  
A window-type air conditioner housing includes a backboard and two parietal sideboards of polystyrene. Each sideboard has a steel plate implant and a coaxial bracing hole for supporting a motor and...
6068080 Apparatus for the redistribution of acoustic energy  
An apparatus for the redistribution of acoustic energy is provided which comprises a lens having a reflective surface defined by the surface of revolution R1 of an elliptical arc A1 rotated about a...
6059069 Loudspeaker waveguide design  
A loudspeaker horn has straight wall section and a curved wall section. The straight wall section has diverging walls defining a coverage angle and the curved wall portion is connected to the...
6035962 Easily-combinable and movable speaker case  
An easily-combinable and movable speaker case includes two side boards, a front holed board, a speaker support board, an electric circuit board, a rear control board, a cap board, a bottom board,...
5910648 Sound generator  
In a sound generator of the type having a motor powered piston (7-9) limiting a chamber (18) connected to a resonance tube (16) and which is adapted to generate sound waves for cleaning heat...
5850060 Acoustic lens device  
An acoustic lens device is provided for use in facilitating oral communication in a space which is acoustically challenged. The lens device includes at least one acoustic reflector for positioning...
5828012 Protective cover assembly having enhanced acoustical characteristics  
A sound-transmissive cover assembly which provides protection from the ambient environment to transducers such as microphones, loudspeakers, buzzers, ringers, and other delicate devices; and across...
5793001 Synchronized multiple transducer system  
In general, the invention comprises a device capable of emitting either acoustic or electromagnetic radiant energy. The device has at least one reflector with a smooth concave surface which...
5642445 System for determining an interior or exterior acoustic noise level of an enclosed structure and noise reduction device incorporating such system  
The acoustic noise monitor determines acoustic sound levels radiated or stered to an exterior or interior fluid space of a structure such as an enclosed structure by measuring a condition, such as...
5623133 Speaker grille and molding method therefor  
In a speaker grille formed of a synthetic resin, including a grille plate having a plurality of through holes and a frame integrally formed with the grille plate so as to surround the outer...
5616892 Virtual imaging multiple transducer system  
In general, the invention comprises a device capable of emitting either acoustic or electromagnetic radiant energy. The device has at least two transducing elements for producing this energy, and...
5350887 Method and apparatus for the generation of low frequency sound  
The invention relates to a method and apparatus for the generation of low frequency sound by means of the excitation of a low frequency standing gas borne sound wave. A low frequency sound...
5285024 Microphone  
A microphone, preferably of the type to be held in the hand or to be attached to a stand, includes a handle part, an intermediate part and a head part. At least the handle part is formed of two...
5185728 Omnidirectional ultrasonic transducer  
An ultrasonic transducer is described that comprises an oscillatory element (e.g., piezoelectric or electrostatic) having a frequency of oscillation in the ultrasonic region. The transducer...
5146434 Sound focusing device  
A sound focusing device for use with a siren. The device is comprised of an adjustable baffle or damper reducing the velocity of air or sound eminating from a siren. The baffle or damper is...
5131052 Mid-range loudspeaker assembly propagating forward and backward sound waves in phase  
A loudspeaker assembly includes a vibrating element which generates pressure waves in a first predetermined frequency range which propagate in a first forward direction and a second backward...
5111904 Molded article having elastomeric mold member used therewith  
This invention relates to the use of a flexible, heat resistant mold member. The mold member is useful in molding processes such as dip or slush molding. The mold member maintains its structural...
5056069 Ultrasonic sensor  
An ultrasonic sensor which is particularly suited to measuring the sound-pressure amplitude in the focus range of a lithotripter and includes in a region a piezoelectrically activated polymeric...
5010739 Air conditioning apparatus having audible sound level control function  
An audible sound radiated from an air conditioning apparatus is decreased when the actual audible sound detected by the sound sensor is greater than a predetermined audible sound value which is...
4995012 Method of generating an elastic wave  
An acoustic filter is provided for attenuating or suppressing the negative pressure half-waves of an elastic wave, comprising an enclosure containing a liquid whose saturating vapor tension is...
4993511 Speaker  
A speaker including a speaker unit, a speaker frame for supporting the speaker unit and a grille unit for covering the speaker frame. The grille unit is bolted to the speaker frame by bolts, and...
4974698 Speaker cover grille installation  
A frameless pierced metal speaker grille is directly attached to a panel in which a speaker opening is formed by a series of tabs integrally formed in the speaker grille at spaced locations about...
4969196 Speaker and horn array  
A speaker and horn array having improved audio characteristics is formed in a baffle case. A plurality of small speakers are mounted in the baffle case in a vertical array in close proximity with...
4967874 Microphone baffle apparatus  
A microphone baffle apparatus having a baffle member having first and second sides with the first side shaped to form a sound baffling surface to absorb sound energy. The baffle member has an...
4967872 Loud speaker system  
A sound diffuser assembly for use with a compressive driver. The sound diffuser assembly has a sound reflector for receiving and redirecting sound energy from the compressive driver. A sound...
Matches 1 - 50 out of 176 1 2 3 4 >