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| Number | Title | Issue Date |
| 8180075 | Arrangement for variable bass reflex cavities A modified housing in a portable product (400, 500, 700, or 800) includes a housing detail (405, 506, 706 or 710 or 806) forming at least a portion of a loud speaker back cavity having a pipe inner diameter for a resonant pipe (... | 05/15/2012 |
| 8098852 | Acoustic reflector and energy storage for media assemblies A speaker assembly is provided with a housing, a speaker mounted to the housing, and a reflector spaced apart from and facing the speaker. The reflector is symmetrical and has an arcuate central convex region for reflecting pressure back to the speaker for amplifyin... | 01/17/2012 |
| 8036403 | Directional sound wave radiator The present invention belongs to the field of loudspeaker and relates to directional sound wave radiator comprising a sound transmission duct, a reverser, an annular director, a parabolic reflector, and a straight tubular loudspeaker cylinder. The sound transmission... | 10/11/2011 |
| 8014545 | Ceiling or wall-mounted loudspeaker system with anti-diffraction wave launch device A loudspeaker system includes an enclosure having an open end defining a plane, a baffle, a loudspeaker operating in the 4 kHz to 10 kHz range, and a device, preferably a ribbed portion having a plurality of grooves, coupled to the baffle for modifying the spectral ... | 09/06/2011 |
| 7912234 | Acoustic projector for propagating a low dispersion sound field A broadband sound generator and transmitter provides minimal attenuation of sound over the distance between the generators and a point at a selected distance. The transmission component includes a parabolic dish and a positionable framework for the sound generators.... | 03/22/2011 |
| 7778431 | Sound enhancing stands for portable audio devices Stands for a portable audio device include a housing and a mounting member. The mounting member is configured to couple the audio device to the housing at a location selected to reflect sounds generated by a speaker of the audio device away from the housing. Stands ... | 08/17/2010 |
| 7760895 | Virtual sound imaging loudspeaker system A loudspeaker system positioned to one side of a listener includes a closed-back tweeter supported in front of a concave reflective surface. The curvature of the surface is formed by vertical and parallel first and second sides of a rectangle wherein the first side ... | 07/20/2010 |
| 7684574 | Reflective loudspeaker array A reflective loudspeaker array is cooperatively operable with an acoustically reflective planar surface to provide a constructive combination of direct and reflected sound waves that produces a uniform sound field. The uniform sound field provides a controlled sound... | 03/23/2010 |
| 7606379 | Omni-directional speaker lamp A speaker, having a diaphragm with a central opening and further having a pole piece, including a first sound dispersion element extending from the pole piece through the central opening of the diaphragm and further extending beyond the diaphragm wherein the first s... | 10/20/2009 |
| 7596236 | Loudspeaker with direct emission and optimised radiation The invention concerns a mobile membrane loudspeaker equipped with a partial closure optimising its radiation. The invention is characterised in that the loudspeaker with mobile diaphragm (19) attached to a rigid frame (15) defining an acoustic emissio... | 09/29/2009 |
| 7577265 | Loudspeaker system providing improved sound presence and frequency response in mid and high frequency ranges A speaker system includes a first, second and third sound radiators with the second sound radiator positioned medially between the first and third sound radiators. The radiators project first, second and third sound vectors respectively, with the second sound vector... | 08/18/2009 |
| 7426282 | Head set speaker and stereo playing device A head set speaker and stereo radio playing device exhibits improved harmonics and acoustic fidelity. A resilient and flexible headpiece is sized to fit behind the head of the user. Right and left device enclosures are carried by the ends of the headpiece, and are a... | 09/16/2008 |
| 7400736 | Method for extending the frequency range of a beamformer without spatial aliasing A conferencing unit, comprising an array of microphones embedded in a diffracting object configured to provide a desired high frequency directivity response at predetermined microphone positions, and a low frequency beamformer operable to achieve a desired low frequ... | 07/15/2008 |
| 7366310 | Microphone array diffracting structure The present invention increases the aperture size of a microphone array by introducing a diffracting structure into the interior of a microphone array. The diffracting structure within the array modifies both the amplitude and phase of the acoustic signal reaching t... | 04/29/2008 |
| 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 |
| 7336403 | Optical element and illumination apparatus having same An object of the present invention is to efficiently shape a light flux emitted from a light source into a linear shape and so as to provide an optical element having high versatility that can be widely used irrespective of the original sizes and to provide an illum... | 02/26/2008 |
| 7269263 | Method of broadband constant directivity beamforming for non linear and non axi-symmetric sensor arrays embedded in an obstacle A method is provided for designing a broad band constant directivity beamformer for a non-linear and non-axi-symmetric sensor array embedded in an obstacle having an odd shape, where the shape is imposed by industrial design constraints. In particular, the method of... | 09/11/2007 |
| 7254239 | Sound system and method of sound reproduction A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left ... | 08/07/2007 |
| 7203329 | Audio speaker system employing an axi-symmetrical horn with wide dispersion angle characteristics over an extended frequency range A speaker system includes a speaker driver loaded by a horn waveguide. The speaker driver reproduces sound within an extended frequency range that includes a high frequency band between 8 kHz and 11 kHz. In the preferred embodiment, the extended frequency range incl... | 04/10/2007 |
| 7203332 | Magnet arrangement for loudspeaker An electro-dynamic loudspeaker includes a frame, a plurality of magnets and a diaphragm. The frame includes a molded plastic body. The magnets may be molded into the frame in a determined configuration. The frame is mechanically coupled to the diaphragm such that th... | 04/10/2007 |
| 7184562 | Loudspeaker apparatus A loudspeaker apparatus in which sound from a loudspeaker is emitted from a top surface of a loudspeaker cabinet, wherein the top surface is slanted obliquely backward and in which a sound reflecting panel is mounted such that that the panel can swing on the rear pl... | 02/27/2007 |
| 7158648 | Loudspeaker system with extended bass response A loudspeaker system has an extended bass or low frequency response. The loudspeaker system integrates a passive radiator with a transducer. The loudspeaker system also mechanically isolates the passive radiator and the transducer. A support mechanism mechanically g... | 01/02/2007 |
| 7142680 | Multiple waveguide coaxial ceiling loudspeaker A flush mountable ceiling speaker (10) with individual coaxial waveguides (20, 22) for both the lower and high-frequency transducers (11, 12). The lower frequency radiation is combined with the sonic energy radiated by the high-frequency transdu... | 11/28/2006 |
| 7133533 | Passive acoustic radiating An audio device has passive radiators that are driven by acoustic drivers. The passive radiators are arranged so that the net mechanical vibration is minimized. ... | 11/07/2006 |
| 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 |
| 7068801 | Microphone array diffracting structure The present invention increases the aperture size of a microphone array by introducing a diffracting structure into the interior of a microphone array. The diffracting structure within the array modifies both the amplitude and phase of the acoustic signal reaching t... | 06/27/2006 |
| 7012506 | Ultrasonic pest repeller A pest repeller including at least a first ultrasound transmitter mounted on a base and a second transmitter rotatably mounted above the first transmitter. Both transmitters can be rotatably mounted on a common post carried by the base. The arrangements permit a gre... | 03/14/2006 |
| 6996243 | Loudspeaker with shaped sound field The loudspeaker and method provide a driver of a loudspeaker that is movable parallel to an axis of movement through a center of the driver to produce sound waves. The driver is aligned with the driver plane orthogonal to the axis of movement. The driver plane is at... | 02/07/2006 |
| 6928720 | Method of manufacturing a surface acoustic wave device A surface acoustic wave device includes a piezoelectric substrate and at least one interdigital electrode disposed on the piezoelectric substrate. The interdigital electrode is made of α-tantalum. ... | 08/16/2005 |
| 6902812 | Surface treatment for silicone hydrogel contact lenses comprising hydrophilic polymer chains attached to an intermediate carbon coating The present invention provides an optically clear, hydrophilic coating upon the surface of a silicone medical device by sequentially subjecting the surface of the lens to plasma polymerization in a hydrocarbon-containing atmosphere and then covalently attaching a pr... | 06/07/2005 |
| 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 |
| 6804371 | Speaker having a laser vibration diaphragm A speaker includes a housing having a diffusion opening provided with a laser vibration diaphragm. The laser vibration diaphragm has reflective spatial patterns, so that the speaker may present multiple-image variations under different rays of light, thereby enhanci... | 10/12/2004 |
| 6738483 | Overhead loudspeaker systems An overhead loudspeaker system is achieved which controls and shapes the ultimate acoustical wave form produced thereby, by providing at least one loudspeaker driver, mounted in a housing or enclosure, and a uniquely constructed wave shaping and controlling member f... | 05/18/2004 |
| 6731765 | Loudspeaker device A loudspeaker device includes left and right channel loudspeaker units which are disposed on left and right sides in close proximity to each other, and a partition member projecting forwardly in the direction of propagation of sound from the loudspeaker units by a p... | 05/04/2004 |
| 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 |
| 6636610 | Loudspeaker systems By providing an enclosure having an acoustically optimum size and an effective or virtual air volume for optimum performance, a loudspeaker system is realized which is able to faithfully reproduce desired input signals, particularly, lower frequencies or ... | 10/21/2003 |
| 6625288 | Collapsing paraboloid dish and method A paraboloid receiving dish having a base, a receiver coupled to the base, and a plurality of petals pivotably connected to the base. The petals are moveable between an open position and a closed position with each of the positions forming a reflector hav... | 09/23/2003 |
| 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 |
