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| Number | Title | Issue Date |
| 8041064 | Card type MEMS microphone It is an object of the invention to provide an MEMS microphone having a directionality. A card type MEMS microphone according to the invention comprises a substrate having a first through hole and a second through hole, an MEMS chip in which a space formed by a diap... | 10/18/2011 |
| 7508952 | Acoustic sound routing in vehicles To ensure the same high quality of acoustic radiation from audio systems on each seat of current vehicles, an acoustic device is provided for generating audio signals, which allows sound sources to be integrated into the area located near the headrest of a vehicle s... | 03/24/2009 |
| 7412763 | Method of making an acoustic assembly for a transducer A method of making an acoustic assembly for use in a transducer includes forming a multi-layer assembly. The multi-layer assembly includes a first layer member and a second layer member. Each member includes a center portion, an edge portion and an aperture separati... | 08/19/2008 |
| 7400910 | Speaker sound enhancement for a mobile terminal The present invention relates to a mobile terminal such as a mobile telephone or the like which has a speaker built in, and realizes a sound emission structure for separately extracting the front output and back output of the speaker in a plurality of directions. Th... | 07/15/2008 |
| 7353907 | Speaker enclosure for a wall mounted speaker system A process and kit is provided for retro-installing a speaker enclosure for a wall mounted speaker. The process includes mounting a selected speaker surround member in a building wall between the front and back wall surfaces and between the wall studs and around the ... | 04/08/2008 |
| 7337874 | Lightweight speaker enclosure A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic par... | 03/04/2008 |
| 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 |
| 7187105 | Transducer with coupled vibrators A transducer includes a Langevin type vibrator, a bending vibrator, and a ring-like member. The Langevin type vibrator has a construction in which a front mass, a cylindrical vibrator, and a rear mass are provided in tandem, and those elements are tightened by a bol... | 03/06/2007 |
| 7155021 | Loudspeaker having an acoustic panel and an electrical driver A panel-shaped loudspeaker comprising a panel (1) having a first main surface (1A) and a second main surface (1B) parallel to the first main surface and further comprising an exciter (3) positioned at the first main surface. When the exci... | 12/26/2006 |
| 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 |
| 7039212 | Weather resistant porting A port for a loudspeaker is disclosed which is sufficiently weather resistant for long term outdoor use and which prevents debris, insects and other vermin from entering the loudspeaker and which is compact and efficient. ... | 05/02/2006 |
| 7035419 | Anti-resonant structure for speakers An anti-resonant structure for speakers includes a resonant structure which has a housing compartment, at least one elastic element located in the housing compartment that has one end fastening to the resonant structure and another end coupling with a speaker, and a... | 04/25/2006 |
| 6912290 | Speaker unit for low frequency reproduction The invention provides a speaker unit for low frequency reproduction wherein distortion is reduced and the orientation of a sound image of the lower side frequency region is augmented. To that end, the phase characteristic in an actually used frequency band is made ... | 06/28/2005 |
| 6904157 | Structure around a speaker unit and applied electric or electronic apparatus thereof A compact lightweight speaker system without a resonance box that can reproduce the original sound with high fidelity. A speaker unit is located on a baffle board with a vibration absorbing member between a frame of the speaker unit and the baffle board. Furthermore... | 06/07/2005 |
| 6859543 | Speaker system and method for making the same A speaker system and related method for making the same include a rigid, cylindrically shaped body member with opposite ends and a hollow interior which defines a sound chamber. A base is connected with one end of the body member to support the speaker system within... | 02/22/2005 |
| 6763117 | Speaker enclosure An enclosure assembly for use in an audio speaker includes a driver support, a plurality of cavity forming layers disposed rearward of the driver support, and an end piece disposed adjacent a rearward most cavity forming layer. The driver support includes a front an... | 07/13/2004 |
| 6741717 | Device for reducing structural-acoustic coupling between the diaphragm vibration field and the enclosure acoustic modes A novel cap for a telephone unit is provided to de-couple the loudspeaker diaphragm from the acoustic resonance in the enclosure and dampen the first resonant frequency of the diaphragm. The cap has a flange located at an outer edge thereof and a cavity provided in ... | 05/25/2004 |
| 6735320 | Angled port loudspeaker A loudspeaker comprises an enclosure including a bottom wall, a front wall extending upwardly from the bottom wall, and a rear wall extending upwardly from the bottom wall and opposite the front wall and having an angled wall portion facing generally upwardly and re... | 05/11/2004 |
| 6561311 | Speaker cabinet An improved structure of speaker cabinet comprising a housing opened on one side thereof, and comprising a front panel, wherein, a plurality of intermediate speakers can be held firm and get increased connecting strength when the front panel is integrally... | 05/13/2003 |
| 6411720 | Speaker systems with lower frequency of resonance Speaker systems with lower frequency of resonance have a short air passage in a cabient from the speakers or drivers to an air passage exit. Teh resulting column of air lowers the resonant frequency or the drivers from within a frequency range of interest... | 06/25/2002 |
| 6377696 | Loudspeaker systems The loudspeaker system includes a loudspeaker drive unit (2) and a tube (4) acoustically coupled to the rear of the loudspeaker drive unit for leading away and absorbing sound waves produced at the rear of the loudspeaker drive unit. The tube is acoustica... | 04/23/2002 |
| 6356643 | Electro-acoustic transducer An electro-acoustic transducer, such as a speaker device or an earphone device. Includes an electro-acoustic transducing unit, such as a speaker unit, for converting input electrical signals into sound, a casing in which the electro-acoustic transducing u... | 03/12/2002 |
| 6324292 | Speaker apparatus A speaker apparatus comprises a speaker unit, a cabinet for forming an internal space on the rear side of the speaker unit with a plurality of wall surfaces including a baffle plate for use in mounting the speaker unit, a acoustic tube which is formed alo... | 11/27/2001 |
| 6320971 | 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 isolation walls, and at least one partition wall situated inside the cabinet to form a space b... | 11/20/2001 |
| 6278789 | Frequency selective acoustic waveguide damping An acoustic waveguide loudspeaker system has an electroacoustical transducer having a vibratile surface. An acoustic waveguide has a first end open and a second end adjacent to the vibratile surface and an effective length corresponding substantially to a... | 08/21/2001 |
| 5240221 | Viscoelastic damping system A vibration damping assembly incorporating an attenuating body formed from viscoelastic material is disclosed. The body may, in a preferred embodiment, be made up of a plurality of plates stacked together and separated with spacers. The viscoelastic mater... | 08/31/1993 |
| 5119429 | Audio installation, in particular stereophonic, for television sets with a large built-in low-frequency loudspeaker The stereophonic system of the invention comprises two tweeters (12, 13) fixed to the front panel, and a low-frequency loudspeaker (4) fixed to an enclosure (6) inside the back of the cabinet. It is thus possible to use a large low-frequency loudspeaker.... | 06/02/1992 |
| 5073945 | Loudspeaker system An improved dipole type characteristic loudspeaker system has a pair of loudspeakers (1 and 2) which are mounted on the front baffle board (4) and the back baffle board (5) of a console (3) and are connected to be driven in each-other opposite phase relat... | 12/17/1991 |
| 4953655 | Acoustic apparatus Disclosed is a compact, wide-range acoustic apparatus which can perform lower bass sound reproduction and is free from noise or distortion components. Spatially separated first and second chambers are formed. The first and second chambers communicate with... | 09/04/1990 |
| 4944019 | Low sound region reproducing speaker system A low sound region reproducing speaker system comprising a box, a partition separating the internal space of the box into two spatial portions, a pair of speakers attached to the partition wall, and an aperture formed in the side wall of the box through w... | 07/24/1990 |
| 4924964 | Loudspeaker enclosure An enclosure for a bass loudspeaker for housing in a larger multiple loudspeaker enclosure having a pair of concentric cylindrical shells filled with dense particulate matter.... | 05/15/1990 |
| 4898260 | Loudspeaker mounting with integral back wave filter and wave modulating plate of same design An improved loud speaker mounting frame having a continuous conic shape in cross section, so that by means of the conic and apertures along the apex on one side of the conic cross section shape the interference of negative sound waves within the cabinet i... | 02/06/1990 |
| 4807293 | Loudspeaker housing The invention concerns a loudspeaker housing (1), particularly for rendition of the deep and middle tone ranges, having a loudspeaker (27) and a folded flare (14; 20, 21, 15, 16; 6). The front side of this loudspeaker housing (1) has an upper area, in whi... | 02/21/1989 |
| 4574906 | Outdoor speaker A loudspeaker assembly for use outdoors is disclosed. A woofer speaker is secured in a housing for the downward projection of sound through a generally continuous circumferential aperture between the housing and base. A tweeter is mounted coaxially with t... | 03/11/1986 |
| 4509192 | Speaker enclosure This speaker enclosure is ideal for public address systems. Primarily, it consists of a ceiling mounted panel, with a conical baffle secured to it, which is used to delay sound off of the back of the speaker, so as not to interfere with the sound from the... | 04/02/1985 |
| 4439644 | Loud speaker enclosure A loudspeaker enclosure has a loudspeaker driver mounted on a surface of the enclosure such that the driver has an exposed front face to produce sound waves which are sought to be transmitted to a listening space exterior of the loudspeaker enclosure. A p... | 03/27/1984 |
| 4426552 | Speaker distortion compensator In sound generating systems, it has been ascertained that various factors cause spurious, audible emanations when transducers of reasonable size and cost are driven in complex motions characteristic of typical high fidelity audio reproduction. In a typica... | 01/17/1984 |
| 4413160 | Ribbon-type loudspeaker The ribbon-type loudspeaker that has the characteristics of large cooling effect such that electrical input power is increased. The ribbon-type loudspeaker comprises magnet means having plates positioned in facing relation to each other to form a gap ther... | 11/01/1983 |
| 4385210 | Electro-acoustic planar transducer An electro-acoustic transducer using thin, lightweight, planar diaphragms driven by strategically located, coil-driven, high-energy, permanent magnets. A framework maintains the diaphragms in substantially co-planar relationship a predetermined distance f... | 05/24/1983 |
| 4330691 | Integral ceiling tile-loudspeaker system A loudspeaker is formed integrally with a rectangular ceiling tile which is provided with electrical contacts for connecting the loudspeaker in series or parallel combinations with other loudspeaker-tile assemblies and for supplying power to the loudspeak... | 05/18/1982 |
