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| Number | Title | Issue Date |
| 7433483 | Narrow profile speaker configurations and systems A narrow profile speaker unit comprises at least one speaker outputting sound towards an internal surface and through a duct with an output terminus, such as a slot, having a narrow dimension, effectively changing the cross-section of the speaker's audio output wave... | 10/07/2008 |
| 7333626 | Arbitrary coverage angle sound integrator A system is disclosed for changing a coverage angle of sound produced from a loudspeaker system. The loudspeaker system includes an enclosure that projects sound at a predetermined angle. A sound integrator includes an inner surface positioned adjacent to a mid-rang... | 02/19/2008 |
| 7324654 | Arbitrary coverage angle sound integrator A system is disclosed for changing a coverage angle of sound produced from a loudspeaker system. The loudspeaker system includes an enclosure that projects sound at a predetermined angle. A sound integrator includes an inner surface positioned adjacent to a mid-rang... | 01/29/2008 |
| 7266211 | Speaker grill A speaker grille is disposed in front of a speaker having a diaphragm and reproducing the sounds of 1 kHz and higher. The speaker grille is provided with a sound opening which includes a sound opening portion that opposes a region extending from the edge portion of ... | 09/04/2007 |
| 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 |
| 7134523 | System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers This invention provides a radiation boundary integrator (“RBI”) for integrating sound radiation from mid-range and high-frequency sources in multi-way loudspeakers. The RBI is a substantially solid boundary that is placed over the mid-range speakers to provide s... | 11/14/2006 |
| 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 |
| 6574344 | Directional horn speaker system A directional speaker system includes an enclosure having an inner surface, an outer surface, an open end, and a closed end, a speaker driver directed toward the open end and mounted near the closed end of the enclosure, an in-line phase plug mounted in f... | 06/03/2003 |
| 6470088 | Vented loudspeaker enclosure with limited driver radiation A loudspeaker enclosure includes a rectangular cabinet having an acoustical port mounted in one of the vertical walls. A loudspeaker is installed in a bottom wall of the cabinet facing away from an interior volume of the cabinet. A highly resistive acoust... | 10/22/2002 |
| 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 |
| 5058154 | Telephone handset having a pure acoustic resistance connection The present invention relates to a telephone handset using an acoustic low impedance receiver transducer. A good reproduction of the low frequencies is obtained by introducing a front cover (7) having pure acoustic ohmic connections (8, 14) from the front... | 10/15/1991 |
| 4503564 | Opto-acoustic transducer for a telephone receiver A sound producing diaphragm of low density, low heat capacity, a large coefficient of thermal expansion and a large Young's modulus is located adjacent the end of an optical fiber transmission line element which is adapted to propagate modulated light and... | 03/05/1985 |
| 4389542 | Orthodynamic headphone Headphone earpieces which comprise each at least one electroacoustic transducer operating on the orthodynamic principle and including a small-mass diaphragm of an extension corresponding at least to that of an average auricle, with the coupling space of e... | 06/21/1983 |
| 4292561 | Attenuating means for electroacoustic transducer An electroacoustic transducer in which resonance ratio effects above 3500 Hz are attenuated by acoustic means, wherein the transducer membrane is disposed in a cavity which is sub-divided thereby, the sound-receiving space at the front side of the membran... | 09/29/1981 |
| 4170720 | AGC circuit particularly for a hearing aid A high fidelity hearing aid is disclosed for providing high quality sound and is primarily directed to those users whose hearing loss is such that they need some amplification for low level signals, but do not need amplification for high level signals.... | 10/09/1979 |
| 4163876 | Electro-acoustic transducer with variable thickness foam surfaced diaphragm An electro-acoustic transducer having a flat sound radiating plane is disclosed, in which a voice coil bobbin having a voice coil wound around an outer circumference thereof is inserted in an air gap defined by an inner pole piece and an outer pole piece ... | 08/07/1979 |
| 4012605 | Input/output transducer with damping arrangement An improved input/output transducer having an arrangement for changing the frequency response of a small speaker when it is used as a microphone provides optimum response for both requirements. When utilized as a microphone, most of the apertures in the s... | 03/15/1977 |
| 4008374 | Loudspeaker systems A bass unit for a loudspeaker system which has a pair of loudspeakers mounted one behind the other in a casing to define a chamber of air therebetween. The loudspeakers are operated in phase with one another so that the pressure of air in the chamber rema... | 02/15/1977 |
| 3944757 | High-fidelity moving-coil loudspeaker In a moving-coil type loudspeaker, a tubular member of a length longer than the wave-length of any one of the frequencies in a desired frequency range and having a constant cross-sectional area along its length, is coupled, at one end thereof, with one si... | 03/16/1976 |
