Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7669692 | Sound diffuser A sound diffuser includes a front plate defining a plurality of sound exit holes. An outer frustoconical wall extends from the front plate, the outer frustoconical wall decreasing in diameter from the front plate. An inner frustoconical wall extends from the outer f... | 03/02/2010 |
| 7584820 | Acoustic radiating An apparatus includes an acoustic device comprising a waveguide having a sound opening at one end facing a space, an audio source, an acoustic driver at another end of the waveguide, the acoustic driver facing a listening area, and structure supporting the acoustic ... | 09/08/2009 |
| 7520368 | Horizontally folded reflex-ported bass horn enclosure A low frequency folded horn enclosure intended for use in proximity with at least one planar surface with access to the horn throat from the top of the enclosure. The horn is bifurcated at the throat and folds horizontally around a central trapezoid-shaped columnar ... | 04/21/2009 |
| 7513332 | Convertible folded horn enclosure with improved compactness A low frequency exponential bass horn enclosure employing a bifurcated horn pathway and twin throats, convertible to a variety of front-loaded or rear-loaded configurations without modifications by the use of interchangeable parts, with driver access typically from ... | 04/07/2009 |
| 7352875 | Speaker apparatus The present invention provides a speaker apparatus which has a simple structure and a high directivity and which can emit sound. The speaker apparatus includes a hood having an opening at a front end with a sound reflecting inner wall shaped like a rotating surface ... | 04/01/2008 |
| 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 configuration exhibiting a fractality zone of between 1 cm and 50 cm, of... | 12/18/2007 |
| 7299892 | Door trim speaker grille with electroluminescent lamp and injection molding method of making same A door trim speaker grille with an electroluminescent lamp for use with an audio speaker of a vehicle. The electroluminescent lamp is positioned for emitting visible light through sound passages in the speaker grille. In certain embodiments of the invention, the ele... | 11/27/2007 |
| 7296653 | Sound control apparatus A sound controlling apparatus adapted for combination with a speaker unit, comprising a stand configured to support the speaker unit, a reflecting panel or panels associated with the stand to reflect sound waves transmitted by the speaker unit, a side panel or panel... | 11/20/2007 |
| 7270215 | Loudspeaker enclosure with damping material laminated within internal shearing brace A loudspeaker cabinet with a laminated internal brace which has a first rigid layer coupled to a first exterior panel of the cabinet, a second rigid layer coupled to an a second exterior panel of the cabinet, and a damping layer affixed between the rigid layers wher... | 09/18/2007 |
| 7269270 | Standing wave reducing The frequency at which standing waves occur in a loudspeaker enclosure may be reduced by the addition of an internal barrier to the enclosure in order to lengthen the effective length of an internal dimension of the enclosure. Additionally, the internal barrier may ... | 09/11/2007 |
| 7263387 | Speaker module design A speaker module (200) having a speaker unit (210) and a speaker box (220) is provided. The speaker module is mounted in a casing (22) of a hand-held electronic device (20). The speaker box (220) has a wall defining an apert... | 08/28/2007 |
| 7252176 | Reflex-ported folded horn enclosure A low frequency exponential/hyperbolic hybrid folded horn enclosure intended for use in proximity with at least one planar surface, such as a floor, ceiling, or wall, with access to the horn throat from the top of the enclosure. The horn is bifurcated at the throat ... | 08/07/2007 |
| 7219873 | Support base for a structural pole A support base for supporting a structural pole is provided. The support base includes a frame having an internal cavity for housing hardware, such as a speaker assembly, that is associated with the corresponding structural pole. The frame is generally open laterall... | 05/22/2007 |
| 7207413 | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems An acoustic impedance matching enclosure is provided having a driver loaded into a chamber buffering the throat/mouth of a closed loop transmission line. Transmission line consists of a termination member, outer and inner enclosure walls, high-density lining and thr... | 04/24/2007 |
| 7201252 | Loudspeaker systems A loudspeaker system includes a loudspeaker drive unit (1) and a rear sound absorption system (20) having a multiplicity of tubes connected to the rear of the loudspeaker drive unit. In one example, the rear sound absorption system (20) comprise... | 04/10/2007 |
| 7136498 | Loudspeaker having a dual chamber acoustical enclosure with two external vents and one internal vent A loudspeaker includes an acoustical enclosure having an internal wall dividing the enclosure into first and second subchambers, an electro-acoustical transducer having a vibratable speaker cone mounted in an opening in the internal wall of the acoustical enclosure,... | 11/14/2006 |
| 7123736 | Double-resonator micro-speaker assemblies and methods for tuning the same Micro-speaker assemblies and mobile terminals including micro-speaker assemblies are provided. The micro-speaker assemblies include a micro-speaker positioned in a housing. A first forward tuning volume is positioned adjacent a front face of the micro-speaker. A pas... | 10/17/2006 |
| 7123725 | High intensity infrasonic tunable resonant acoustic test cell An apparatus and method are provided for high intensity acoustic test cells that employ the Helmholtz resonator principle, incorporating at least one moderately-sized volume or test cell that is tunable to a given infrasonic to low-sonic frequency and generates soun... | 10/17/2006 |
| RE39330 | Speaker system and a method for improving sound quality thereof A speaker system suppresses standing waves generated in the system and reproduces clear and dynamic bass sound. The system includes a cabinet formed of acoustic insulation walls, and at least one partition wall situated inside the cabinet to form a space by surround... | 10/10/2006 |
| 7103193 | Bandpass woofer enclosure with multiple acoustic fibers A bandpass loudspeaker enclosure having three sub chambers, a first subchamber being a Helmholtz-reflex chamber with a passive acoustic radiator operating in parallel with the transducer, and the remaining two chambers utilizing two passive acoustic radiators to ach... | 09/05/2006 |
| 7093688 | Structure for preventing the generation of standing waves and a method for implementing the same A speaker assembly includes a speaker mounted within a housing having a front plate and a base plate. The speaker is inclined with respect to the front plate. The base plate includes one of an inclined type structure, a convex type structure, a radial rib type struc... | 08/22/2006 |
| 7051835 | Bass-reflex loudspeaker system and method of manufacturing the same The loudspeaker construction comprises a loudspeaker chamber delimited by a loudspeaker enclosure structure, a reflex duct communicating with the loudspeaker chamber so as to connect the loudspeaker chamber to the exterior environment of the loudspeaker enclosure, a... | 05/30/2006 |
| 7027605 | Mid-range loudspeaker A midrange loudspeaker for operation in conjunction with low-frequency and high-frequency loudspeaker modules in a theater sound system, having a reduced depth for deployment in limited space. The midrange module is configured with a plurality of drivers and a waveg... | 04/11/2006 |
| 7027797 | Portable terminal system In a portable terminal system having a portable terminal device and an external speaker 6 for converting electrical signals from the portable terminal device to electrical signals, the portable terminal device 21 and the external speaker portion 19 | 04/11/2006 |
| 6907955 | Electromagnetic electroacoustic transducer An electromagnetic electroacoustic transducer, includes: a diaphragm; a magnet; an electromagnetic coil; and a casing for storing the diaphragm, the magnet and the electromagnetic coil therein. The case has at least one first sound emitting hole through which a fron... | 06/21/2005 |
| 6886658 | Loudspeaker enclosure system The system consists of 2 large speakers (1A & 1B), and 2 small full range speakers (2A & 2B) having about half the active cone area as the large speakers, mounted in a dual chamber enclosure (3) with the large speaker (1A) m... | 05/03/2005 |
| 6860363 | Planar acoustic waveguide An improved speaker enclosure system and method is described which includes extending the existing baffle of a speaker enclosure on either side. Ideally, the ratio of the height of the baffle should be 1.4 times the internal depth of the enclosure, and the width of ... | 03/01/2005 |
| 6820718 | Acoustic reproduction device with improved directional characteristics A sound reproduction system is disclosed which minimizes unwanted acoustic reflections and the resulting comb-filter effects but which still maintains a broad and uniform directional characteristic throughout the region in the listening room in which listening posit... | 11/23/2004 |
| 6758303 | Electronic device having a multi-mode acoustic system and method for radiating sound waves An electronic device (100) having a multi-mode acoustic system (120) and a method (500) for radiating sound waves are described herein. The acoustic system (120) generally includes a transducer (530), a first port (510), and... | 07/06/2004 |
| 6755277 | Speaker resonance voicebox A computer chassis includes a chassis wall and a speaker mounted on the chassis wall. An acoustic box is connected to the speaker. The box includes a sound reflecting distal wall including a plurality of stepped portions. Each stepped portion is of a different dista... | 06/29/2004 |
| 6705426 | Acoustic diffuser and method of production Acoustic diffuser comprising a containing element able to contain at least a loudspeaker, wherein the containing element is formed by a monocoque made with granules of solid mineral held together by a cohesion material. ... | 03/16/2004 |
| 6675932 | Speaker housing configured to minimize standing waves and resonate above the frequency range of transducers This invention provides a speaker enclosure that minimizes or defuses standing waves and minimizes resonance within the operating frequency range of its transducers. To minimize standing waves, the speaker enclosure has no two surfaces that are parallel t... | 01/13/2004 |
| 6643377 | Audio output system and method therefor There is provided an audio output apparatus capable of providing an effect, with a limited number of speakers, as if the person displayed on the display screen is really speaking. When the television conference is started with a communication partner thro... | 11/04/2003 |
| 6634455 | Thin-wall multi-concentric sleeve speaker An acoustic transmission line speaker enclosure with concentric cylindrical structures establishes acoustic coupling between a rear-traveling sound wave and a surrounding air mass. Inherent rigidity or high bending resistance of the cylindrical structure ... | 10/21/2003 |
| 6603862 | Spherical loudspeaker system By providing a spherically shaped housing or enclosure containing one or more drivers or speakers motors, and cooperatively mounting the housing in association with a uniquely constructed reflector, a spherical loudspeaker system is achieved which control... | 08/05/2003 |
| 6597797 | Spherical loudspeaker system with enhanced performance By providing a spherically shaped loudspeaker and/or closure containing one or more drivers or speaker motors, mounted in cooperative association with a uniquely constructed reflector, a loudspeaker system is achieved which controls and shapes the ultimat... | 07/22/2003 |
| 6578660 | Speaker enclosure venturi expander A venturi expander is mounted on a speaker enclosure to receive the rearward-propagated sound waves and to extend the propagation path. The venturi expander's reflective sides direct the rearward sound to the sides or top or bottom of the speaker enclosur... | 06/17/2003 |
| 6568502 | Sounder, speaker and sound head using the sounder A sounder includes a cone and a sound disk, the cone having a conical peripheral wall with a flat base, the flat base having a diameter smaller than the sound disk, the sound disk being adhered to the conical peripheral wall of the cone and defining with ... | 05/27/2003 |
| 6520282 | Sound enhancement mechanism for speaker sound system A sound enhancement system is provided including a preexisting system and a secondary enclosure with an internal space; wherein sound emanating from the loudspeaker system when the loudspeaker system is within the internal space, is enhanced (baffled) by ... | 02/18/2003 |
| 6516072 | Loudspeaker A module of loudspeaker 1 for high-quality reproduction of music and voice has a direct radiating base electrodynamic driver (EDD) 2 transforming an electric signal to acoustic one at least in the middle-frequency part of the acoustic frequency range and ... | 02/04/2003 |
