Wide Angle Annular Outlet Patents (Class 181/195)
  • Patent number: 10097917
    Abstract: An acoustic system that includes an acoustic assembly and a sound system. The acoustic assembly at least includes a tube removably attached to a compression driver. Additionally, the acoustic assembly includes either a waveguide or a deflector. Either the waveguide or the deflector is also removably attached to the tube. The sound system communicates with the acoustic assembly and includes a filter. The filter includes a filter length that is based on an impulse response of the acoustic assembly. As part of the communication, the sound system sends an audio signal, which has been filtered by the filter, to the acoustic assembly. In response to the audio signal, the compression driver generates a sound wave that travels through the acoustic assembly. While traveling, the acoustic assembly transitions the sound wave from generally traveling in a first direction to a second direction.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 9, 2018
    Assignee: Harman International Industries, Incorporated
    Inventors: Douglas J. Button, Jerry Moro
  • Patent number: 9208768
    Abstract: An acoustical horn is disclosed which is configured to re-direct spherical acoustic wave fronts radiated from a transducer with a minimum amount of distortion. The acoustical horn includes top and bottom portion which are asymmetrically-shaped with respect to each other.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: December 8, 2015
    Inventors: Emanuel LaCarrubba, David Moulton
  • Patent number: 7610991
    Abstract: A speaker contains a pipe member containing opposed ends and a sounding body that is driven on the basis of an acoustic signal which is applied to the sounding body. The sounding body is arranged on the same axis as that of the pipe member. Sound wave radiated from the sounding body radiates from the opposed ends of the pipe member.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: November 3, 2009
    Assignee: Sony Corporation
    Inventors: Nobukazu Suzuki, Masaru Uryu, Yoshio Ohashi
  • Patent number: 7275621
    Abstract: 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 operationally connected to the coupling flange, and a major axis extending through the elongated throat. The coupling flange plane and the mouth plane are nonparallel and define a horn angle. The major axis connects the coupling flange and the mouth and the elongated throat is characterized by a substantially steadily increasing sectional area along the major axis from the transducer-connecting end to the mouth connecting end.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: October 2, 2007
    Assignee: Klipsch, LLC
    Inventor: Rogelio Delgado, Jr.
  • Patent number: 6712177
    Abstract: 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 into the loudspeaker system to further improve the acoustic performance. One advantage of the unique horn loudspeaker system is that it provides a wide horizontal directivity response. Another advantage is that it provides a narrow vertical directivity response.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: March 30, 2004
    Inventor: Mark S. Ureda
  • Patent number: 6059069
    Abstract: 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 proximal end disposed perpendicular to the plane of the throat entrance. At least one coverage angle in orthogonal planes has a common apex in the plane of the throat entrance and along the horn axis.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: May 9, 2000
    Assignee: Peavey Electronics Corporation
    Inventor: Charles Emory Hughes, II
  • Patent number: 5020630
    Abstract: 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 provided with means for controlling the sound energy along the axis of elongation of the slot, namely a slot which is narrower at one end and flares outwardly to the other end, or a plurality of transverse veins dividing the slot and sound channel.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: June 4, 1991
    Assignee: Electro-Voice, Inc.
    Inventor: David W. Gunness
  • Patent number: 5004067
    Abstract: A cinema sound system for unperforated screens includes for each stereophonic channel a floor positioned direct radiator bass speaker unit radiating into quarter space and an upper frequency speaker unit mounted above the screen. Each upper frequency speaker unit includes a middle frequency driver mounted in a sealed rear enclosure which is attached to the throat of a middle frequency horn. A constant directivity high frequency horn with a high frequency driver attached to a rear end is mounted coaxially in the middle frequency horn. Sharp cutoff active crossover filters divide the input signal into low, middle, and high frequency band signals which are separately power amplified. The middle frequency horn is adapted to function as a direct radiator at a lower end of the middle band and as a sectoral horn above an unloading frequency of the middle frequency horn.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: April 2, 1991
    Inventor: Eugene T. Patronis
  • Patent number: 4982436
    Abstract: A loudspeaker having two horns defining two soundpaths passing therethrough an input for connection to a driver and an output for broadcasting an acoustic signal is shown to include a central channel connected at one end to the input, the soundpaths being coincident therethrough and a first transition member which defines separate channels for the soundpaths. Such separate channels serving to change the direction of the soundpaths. There is also shown a pair of side channels, the cross-section of the output ends of the side channels are defined by first and second dimensions, wherein the first dimension is larger than the second dimension. A pair of second transition members serve to again change the direction of the soundpaths. Such transition members have an output end defined by first and second dimensions wherein the second dimension is larger than the first dimension.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: January 1, 1991
    Assignee: Gai-Tronics
    Inventor: James P. Cowan
  • Patent number: 4580655
    Abstract: Opposed side walls of a loudspeaker horn are constructed to direct portions of a sound beam toward a target over different preselected included angles, producing an incident beam which is substantially coextensive with the target. The side walls preferably extend downstream at the preselected angles over a distance at least comparable to a maximum wavelength at which the horn is to be used.
    Type: Grant
    Filed: October 5, 1983
    Date of Patent: April 8, 1986
    Assignee: JBL Incorporated
    Inventor: D. Broadus Keele, Jr.
  • Patent number: 4496021
    Abstract: A radial high-frequency, high-efficiency orthospectral loudspeaker is disclosed in which a horn-loaded, electro-acoustic driver is used and the horn configuration is radial and annular to give a 360.degree. lateral dispersion of the sound generated by the loudspeaker, the output being frequency and amplitude equalized over the desired high frequency band.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: January 29, 1985
    Inventor: Emmanuel Berlant
  • Patent number: 4348750
    Abstract: First and second reflectors, having a parabolic concave reflective surface and a conical reflecting surface, respectively, are vertically spaced on co-linear axis. An energy source, such as a loudspeaker mounted atop the frusto-conical second reflector near the apex of the conical reflective surface thereof is at or proximate the focal point of the concave reflective surface of the parabolic reflector. It is desirable for the major diameters of the reflectors to be approximately twice the wave-length of the lowest frequency sound for which the device is applicable. The shapes of the reflective surfaces are established to provide essentially equal path lengths of energy radiated from the source to a wave front to provide coherent omnidirectional energy propagation from the assembly or, in an alternative use of the apparatus, receive radiant energy and focus it on target instead of a loudspeaker at the focal point of the parabolic reflective surface.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: September 7, 1982
    Inventor: David R. Schwind
  • Patent number: 4348549
    Abstract: A loudspeaker system for radiating acoustic output throughout 360.degree. in generally horizontal planes, comprising an enclosure having low frequency (woofer) and high frequency (tweeter) radiators mounted in spaced relation on a common vertical axis. The horn loaded compression driver tweeter is the upper of the two and has a diaphragm radiating axially upwardly into a flaring horn, preferably exponential, including an intermediate annular section which abruptly reflects sound waves approximately 90.degree. into a radial outlet section of the horn radiating approximately horizontally through 360.degree., providing the known advantages of horn loaded compression drivers in a radically more compact form than conventional horn speakers. The woofer radiates axially downwardly, and a conical plug spaced downwardly from the speaker cone serves to load the cone for higher efficiency and smoother response, and to deflect acoustic output of the cone generally horizontally through 360.degree. in a 2.pi.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 7, 1982
    Inventor: Emmanuel Berlant
  • Patent number: 4310065
    Abstract: A speaker horn is adapted for coupling to a speaker drive assembly and for dispersing incident sound energy in a 360.degree. radial pattern. The horn includes two sound-dispersing structures for making a passageway generally symmetrical about a longitudinal axis. An inserted structure restricts the movement of the incident energy in one axial direction and includes a plug which is nested in close proximity to a wall of a receiving structure at the input end of the receiving structure. The receiving structure restricts the propagation of the sound energy in the other axial direction to cooperate with the inserted structure in defining the passageway in a radial pattern between the two structures. The plug includes a concave face perpendicular to the longitudinal axis for receiving incident energy. The plug, in cooperation with the inner walls of the receiving structure, effects a change in phase of sound energy encountering the plug, and acts as an intensity amplifier for incident sound energy.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: January 12, 1982
    Assignee: Chromalloy Electronics Corporation
    Inventor: Arnold I. Kayman
  • Patent number: 4171734
    Abstract: An exponential horn for use in a speaker is provided and includes a horn having a mouth, a throat and horn wall sections connecting the horn mouth and the horn throat. The horn wall sections define a horn whose cross sectional area progressively increases at a selected rate from a value S.sub.o at the horn throat substantially in accordance with the function S(z)=S.sub.o e.sup.mz. S(z) is the cross sectional area measured at any distance z from the horn throat, m is the flare constant defined as 4.pi.f.sub.c /c, where f.sub.c is the cutoff frequency of the horn and is from about 300 Hz to about 500 Hz. The horn mouth is rectangular in shape and has a perimeter substantially equal to one wavelength of the cutoff frequency of the horn. The distance between the horn throat and the horn mouth is from about 10 inches to about 17 inches.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: October 23, 1979
    Assignee: Beta Sound, Incorporated
    Inventors: Robert S. Peveto, Phillip R. Clements
  • Patent number: 4134471
    Abstract: A loudspeaker system which has a frequency response at any angle located about the speaker system which will be uniform such that the output sound pressure at any frequency from the speaker system will be as great or greater than the sound pressure from any other direction which comprises a reflected path from the speaker system. The speaker system includes a radial horn which radiates a spherical sector rotated 360.degree. through a horizontal plane is provided. One or two speakers are mounted so that they produce a pulsating cylindrical wave which feeds into the radiator and an inverted conical member is mounted in the transition portion between the pulsating cylinder and the output horn portion. This output is blended with similar wavefronts produced by a low fequency loudspeaker which is acoustically associated with a vented box. The vent is on the periphery of the box adjacent the low frequency loudspeaker and is narrower than the thickness of the walls of the box.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: January 16, 1979
    Assignee: Chamberlain Manufacturing Corporation
    Inventor: Daniel L. Queen
  • Patent number: 4104610
    Abstract: An ultrasonic wave horn adaptable to any desired radiation pattern varying in length-to-breadth ratio of intended detecting area. The horn comprises at least a horn body having gradually expanding caliber from a constricted throat to an expanded opening which is of a flat shape with an unequal length-to-breadth ratio, and an ultrasonic wave generating source of which wave emitting side is disposed adjacent the constricted throat of the horn body, wherein the constricted throat of the horn body is also of a flat shape having an unequal length-to-breadth ratio and the respective major axes of the flat-shaped constricted throat and expanded opening of the horn body are in a relation of intersecting each other at right angles.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: August 1, 1978
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hiromitsu Inoue, Susumu Katayama, Hiroshi Ohashi
  • Patent number: 3972385
    Abstract: A horn speaker comprising a diaphragm positioned close to a throat and side walls forming sound passages for radiating the vibrations of the diaphragm effectively as sound waves from the mouth of the speaker.
    Type: Grant
    Filed: January 14, 1974
    Date of Patent: August 3, 1976
    Assignee: Onkyo Kabushiki Kaisha
    Inventors: Masanori Hino, Taro Eguchi, Chitoshi Shiraga
  • Patent number: 3935925
    Abstract: A horn speaker having wide directional characteristics in accordance with the present invention provides a horn having a horn wall the shape of which is formed by connecting a plurality of curves having different flaring constants. The flaring constant of the curve forming a mouth portion of the horn wall is selected so as to be greater than that of the curve forming a throat portion thereof. The mouth portion of the horn wall is shaped so as to have a flaring angle which is formed by the curve at the mouth portion and has no abrupt variation of angle to a baffle plate. The curve at the mouth portion is connected with the curve at the horn wall nearer to the throat portion and having the flaring constant different therefrom at a point at which the differential coefficients of the respective curves substantially coincide with each other.
    Type: Grant
    Filed: November 2, 1973
    Date of Patent: February 3, 1976
    Inventors: Kenji Koiwa, Makoto Kohashi
  • Patent number: 3930561
    Abstract: A loudspeaker horn has a conical section adapted to receive the driver assembly of a speaker system at the small cone end. An exponential section secured to the large cone end, concentrically with the cone longitudinal axis, flares outwardly to terminate in a square cross-section horn mouth. A raised lip secured around the periphery of the horn mouth diffracts sound symmetrically through a dispersion angle of about 120.degree. with a drop of about six decibels or less.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: January 6, 1976
    Assignee: Monitron Industries, Inc.
    Inventor: Arnold I. Klayman