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| Number | Title | Issue Date |
| 7845462 | Wide frequency range horn with modular method for reducing diffraction effects A middle to high frequency straight pathway horn with wide horizontal dispersion characteristics having extended terminus side walls which approach a perpendicular angle compared to the horn axis which are further extended by a rearwardly divergent angled or curved ... | 12/07/2010 |
| 7735599 | Sound wave guide structure for speaker system and horn speaker A sound wave guide structure for a speaker system comprises a sound passage space connecting an inlet opening 11 to an outlet opening 12. The sound passage space branches in plural stages in a range from the inlet opening 11 to the outlet openin... | 06/15/2010 |
| 7686129 | Acoustic horn having internally raised geometric shapes A horn and a loudspeaker employing the horn are disclosed that include a body having a throat that expands outwardly to a mouth such that a first interior area defined by the throat is smaller than a second interior area defined by the mouth. A plurality of raised s... | 03/30/2010 |
| 7631724 | Sound-wave path-length correcting structure for speaker system A sound-wave path-length correcting structure for a speaker system includes a sound source and a horn. The horn has a sound-wave path-length correcting throat portion. The sound-wave path-length correcting throat portion corrects a sound-wave path-length of a sound ... | 12/15/2009 |
| 7392880 | Dual range horn with acoustic crossover A new approach has been developed to combine mid-range and high frequency sound into the throat of a horn designed for sound reinforcement. An acoustic low pass filter element is interposed between the lower frequency passage and the higher frequency passage, so tha... | 07/01/2008 |
| 7360499 | Helmholtz resonator type marine signal A power efficient, acoustical Helmholtz resonator foghorn including a plurality of electrical emitters, some of which are redundant, arrayed at one end of a blocked tube with a plurality of exhaust ports located therein surrounded by a standoff tubular member. The f... | 04/22/2008 |
| 7299893 | Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources A loudspeaker horn (11) having a throat end (13) for receiving acoustic power from aligned acoustic power sources (41, 43, 45), an elongated throat (33), and a flared section (17) is provided with grating lobe mitigation fins (2... | 11/27/2007 |
| 7275621 | Skew horn for a loudspeaker A horn including a substantially flat coupling flange defining a coupling flange plane, a substantially planar mouth defining a mouth plane, an elongated throat extending between the coupling flange and the mouth, a transducer for generating a sonic output operation... | 10/02/2007 |
| 7268467 | Acoustic transducer An acoustic transducer provided with at least one sound source for generating an acoustic centre and a predetermined construction for guiding sound generated by the acoustic centre, which acoustic transducer can be fixed to a fixing wall, wherein the predetermined c... | 09/11/2007 |
| 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 |
| 7146021 | Whizzer cone for loudspeaker for producing uniform frequency response A speaker cone is provided that contains a base portion, and the base portion has a front end and a rear end. The front end contains a plurality of discontinuities such that a first distance from a reference point on a longitudinal axis of the base portion to a firs... | 12/05/2006 |
| 7095868 | Phase plug with optimum aperture shapes A phase plug for optimally matching a drive-unit's diaphragm to the throat of a waveguide is disclosed. Specific embodiments of a circular diaphragm matched to an elliptical waveguide and a circular diaphragm to a rectangular waveguide are disclosed. ... | 08/22/2006 |
| 7068805 | Acoustic waveguide for controlled sound radiation Acoustic waveguide contours that approximate either or both of the Elliptic Cylinder and the Prolate Spheroidal coordinate systems that allows for a more accurate prediction and control over the sound radiation polar pattern are disclosed. ... | 06/27/2006 |
| 7044265 | Constant directivity acoustic horn An improved throat (2) for transmitting acoustic energy from a source driver unit (7) to a feeder section (3) of a directivity controlling acoustic horn is disclosed. The throat (2) comprises: a circular throat entrance (2i)... | 05/16/2006 |
| 7023338 | Apparatus, systems and methods for aquatic sports communications The exemplary embodiment of the present invention integrates a two-way communications device into a personal floatation device (“PFD”; sometimes also referred to herein as a “life vest”). Integration of the two-way communications device in the exemplary PFD ... | 04/04/2006 |
| 6868937 | Sub-woofer system for use in vehicle A sub-woofer system with a flat horn for use in a vehicle which is capable of achieving an improved sound reproducing performance as well as an excellent space factor by mounting the horn on the floor of the vehicle. The sub-woofer system includes a flat horn having... | 03/22/2005 |
| 6837334 | Acoustic horn A folded structure (and a blank of sheet material) capable of being folded to said structure is provided which structure is an acoustic horn comprising an acoustic horn comprising a tapered structure having a base end and an apex end, the tapered structure being for... | 01/04/2005 |
| 6754360 | Signal-horn A signal-horn has an electromagnetically actuated oscillating membrane coupled to an acoustic amplifier having a volute wound duct formed of a first length with generally constant section having an inlet for the sound signal and a second length with variable section... | 06/22/2004 |
| 6712177 | Cross-fired multiple horn loudspeaker system The invention relates to a horn loudspeaker system. The horn loudspeaker system includes a pair of vertically displaced horns with cross-fired aiming angles. A common throat section couples the horns to a driver. A substantially asymmetrical baffling is incorporated... | 03/30/2004 |
| 6585077 | Sound-producing device with acoustic waveguide A sound-producing device includes an acoustical generator associated with a rigid acoustical waveguide. The waveguide has a first section aligned with the exit and a second section aligned with the entry and the two sections are connected by a curved refl... | 07/01/2003 |
| 6557664 | Loudspeaker A loudspeaker is disclosed in which a cone driver operates into one end of an acoustic channel having acoustically closed sides and an acoustically open front. A longitudinally extended member is mounted directly in front of, and in alignment with, the dr... | 05/06/2003 |
| 6334505 | Optimum edges for speakers and musical instruments The invention presents a design of optimum edges for antennas of loudspeakers, microphones, hydro-speakers, hydro-phones, brass and wind instruments, and ultrasonic transducers. These edges have a serrated-roll shape, and enhance the acoustical field stre... | 01/01/2002 |
| 6112847 | Loudspeaker with differentiated energy distribution in vertical and horizontal planes A loudspeaker horn, loudspeaker and a loudspeaker system wherein at least one loudspeaker includes a horn composed of a wave guide, a plurality of throats acoustically coupled to a single wave guide at their mouths and to respective drivers of a plurality... | 09/05/2000 |
| 6079514 | Acoustic horn transducer with a conic type diffuser having and exponential profile in wood An acoustic horn transducer with a conic type diffuser has an exponential profile. The diffuser is formed from wood and has an axial length less than its maximum outer diameter.... | 06/27/2000 |
| 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 straight wall portion at a point tangent thereto, and has a pro... | 05/09/2000 |
| 5991421 | Radially expanding multiple flat-surfaced waveguide device The present invention is a waveguide for an acoustic speaker having a predetermined cone weight. The waveguide body has a speaker end and an open end and an even number of segments with a flat surface in a plane parallel to the speaker end. The segments h... | 11/23/1999 |
| 5925856 | Loudspeaker horn A loudspeaker horn for use with an acoustical driver has a rectangular throat opening with a long dimension relative to the wavelength of the sound pressure waves generated within the high frequency range of the horn. A relatively short pre-load chamber c... | 07/20/1999 |
| 5828627 | Method of and apparatus for producing spherical waves in the ultrasonic range A generator for spherical ultrasonic waves can replace a point source transducer and has a large-area transducer whose output ultrasonic waves are condensed in a funnel and fed to a monomodal waveguide, e.g. a tube at the output end of which phase-correct... | 10/27/1998 |
| 5750943 | Speaker array with improved phase characteristics An improved method and an apparatus uniformly transmit sounds over large angles of coverage. An acoustic source is attached to a loudspeaker horn with two straight outer side walls and two straight upper and lower outer walls, the projected extensions of ... | 05/12/1998 |
| 5646381 | Roof mounted sound horns for vehicles An acoustical assembly and methodology for mounting audio speakers 28 in automotive vehicles an acoustical speaker (28) for generating sound waves including a pair of acoustical horns for directing sound in opposite directions from speakers (28) disposed ... | 07/08/1997 |
| 5631450 | Megaphone A megaphone includes a pair of hollow bodies which are assembled at a connecting portion to open and close freely, wherein a tuning part is formed by denting the center of a flat part of each hemiconical main part to provide a level face around the tuning... | 05/20/1997 |
| 5398992 | Seat having sound system with acoustic waveguide A seat having an acoustic waveguide for conveying sound from a remotely mounted loudspeaker to a location in close proximity to an occupant's ears is disclosed. The seat comprises a horizontal seating member upon which an occupant may sit and a loudspeake... | 03/21/1995 |
| 5285025 | Loudspeaker horn A speaker horn including a first and a second pair of side walls. The first pair of side walls has a first section and a second section between first and second ends, and the second pair of side walls has a third section and a fourth section between third... | 02/08/1994 |
| 5206465 | Sound collecting and concentrating device for attaching to the back of a loudspeaker This invention relates to a loudspeaker having at least one sound collecting tubes attached to the rear of the speaker frame or the sound collecting tubes forming the speaker frame for collecting and directing sound waves emitted from the rear of the spea... | 04/27/1993 |
| 5187333 | Coiled exponential bass/midrange/high frequency horn loudspeaker Coiled exponential bass/midrange/high frequency horn loudspeakers which are characterized by a rigid cabinet of selected size having a sealed air chamber in the base thereof for receiving a low frequency speaker, or driver, a coiled or convoluted, exponen... | 02/16/1993 |
| 5163167 | Sound wave guide A wave guide fitted at the output of a loudspeaker, in front of the membrane or in front of the orifice of a compression chamber, along the axis of the transducer being considered, and comprising a conduit which expands from its input to its output. The a... | 11/10/1992 |
| 5160815 | Megaphone apparatus A megaphone apparatus includes an elongate conical conduit directed into an outwardly flaring forward body portion. The conduit includes an entrance opening, with the flaring body including a plurality of exit openings defined by a central outlet conduit ... | 11/03/1992 |
| 5020630 | Loudspeaker and horn therefor A loudspeaker for projecting sound over a listening area having a driver and a horn in which the horn has a coupling portion communicating at an interface with an outwardly flaring portion, the horn forming an elongated slot at the interface and being pro... | 06/04/1991 |
| 4975623 | Electromagnetic relay for transmitting operating sounds thereof An electromagnetic relay according to the present invention is applicable, for example, to a flasher relay to be mounted in automobiles, autobicycles or the like. When a driver of the automobile turns on the switch for the winker, the winker lamp is turne... | 12/04/1990 |
| 4930596 | Loudspeaker system A loudspeaker system which comprises a loudspeaker unit for radiating a first sound, a horn unit having a throat coupled to the back of the loudspeaker for radiating a second sound, and an acoustic filter provided in the horn for causing an acoustic imped... | 06/05/1990 |
