Patents Assigned to Martin Audio Limited
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Patent number: 10506331Abstract: A coaxial loudspeaker apparatus (10) comprising: a first unit, being arranged to propagate sound in a first frequency range; a second unit, being arranged to propagate sound in a second frequency range that is higher than the first frequency range, comprising a first waveguide (30); a second waveguide (60) arranged to extend substantially in prolongation of the first waveguide (30); and a third waveguide (100) arranged to extend substantially in prolongation of the second waveguide (60).Type: GrantFiled: December 14, 2016Date of Patent: December 10, 2019Assignee: Martin Audio LimitedInventors: Jason Baird, Philip Anthony
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Patent number: 9967652Abstract: A coaxial loudspeaker apparatus (10) comprising a first unit (20) being arranged to propagate sound in a first frequency range; a second unit comprising a first waveguide (30) arranged to propagate sound in a second frequency range that is higher than the first frequency range, and a second waveguide (60) arranged to move, during operation, relative to the first waveguide (30); wherein the second waveguide (60) extends substantially in prolongation of the first waveguide (30). The invention also extends to a loudspeaker (190) incorporating the coaxial loudspeaker apparatus (10).Type: GrantFiled: April 23, 2015Date of Patent: May 8, 2018Assignee: Martin Audio LimitedInventors: Jason Baird, Philip Anthony, Matthew Spandl
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Publication number: 20170048610Abstract: A coaxial loudspeaker apparatus (10) comprising a first unit (20) being arranged to propagate sound in a first frequency range; a second unit comprising a first waveguide (30) arranged to propagate sound in a second frequency range that is higher than the first frequency range, and a second waveguide (60) arranged to move, during operation, relative to the first waveguide (30); wherein the second waveguide (60) extends substantially in prolongation of the first waveguide (30). The invention also extends to a loudspeaker (190) incorporating the coaxial loudspeaker apparatus (10).Type: ApplicationFiled: April 23, 2015Publication date: February 16, 2017Applicant: Martin Audio LimitedInventors: Jason BAIRD, Philip ANTHONY, Matthew SPANDL
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Publication number: 20140348355Abstract: A method of configuring an array of speaker elements is disclosed. The method computes a sound pressure level at various points in the venue and that is evaluated by various objective functions. The configuration of the array is changed, for example by the orientation or position of the speakers and the sound field is recalculated. The process is then iterated until an acceptable configuration is found. The real physical array of speakers is then configured in that manner. The method also provides a 3D plot of the sound pressure level displayed against frequency and position in the venue.Type: ApplicationFiled: June 9, 2014Publication date: November 27, 2014Applicant: Martin Audio LimitedInventor: Ambrose C. T. Thompson
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Patent number: 8191674Abstract: A loudspeaker horn includes a pair of opposed flared sides defining a passage diverging to a mouth, and a vane positioned in the passage for steering sound waves through the passage. The vane may have a straight configuration and be either centrally located between the flared sides or laterally offset in the diverging passage. The vane may be fixed in position or, more preferably, be pivotable so as to be adjustable before each new use according to conditions at that use. The horn may be part of a horn unit that includes a funnel for feeding sound to the horn, and the horn or horn unit may be part of a horn loudspeaker.Type: GrantFiled: April 21, 2006Date of Patent: June 5, 2012Assignee: Martin Audio LimitedInventor: Ambrose Thompson
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Publication number: 20120106767Abstract: A driver for a loudspeaker is mounted in an opening in an acoustic surface, for example a horn, and has a piston shaped to conform to the shape of the acoustic surface. This ensures that the presence of the driver does not disrupt the acoustic properties of the desired shape of the acoustic surface. Preferably the piston is made of closed cell foam and is attached directly to the coil holder of the driver unit.Type: ApplicationFiled: January 11, 2012Publication date: May 3, 2012Applicant: Martin Audio LimitedInventor: Ambrose C. T. Thompson
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Patent number: 6950530Abstract: A directional loudspeaker unit for reproducing mid-range audio frequencies, comprising a cone loudspeaker and, disposed forwardly of the surface of the cone of the loudspeaker, a phase plug and a horn, wherein the phase plug and preferably also the horn are arranged co-axially on the axis of the cone, and wherein the phase plug has a central aperture. Preferably the horn has a diffraction slot defined by lateral walls which converge from the entrance (throat) of the horn.Type: GrantFiled: January 29, 2003Date of Patent: September 27, 2005Assignee: Martin Audio LimitedInventors: Jason Baird, William T. Webb
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Patent number: 6621909Abstract: A horn loudspeaker comprises: a horn (22) having a throat (26) and a mouth (30); a primary electro-acoustic driver (24) mounted at or adjacent the throat of the horn and directed generally along the horn; and at least one secondary electro-acoustic driver (32T, 32B, 32L, 32R) mounted part-way along the horn and directed generally across the horn. The secondary driver(s) can be used to change the local impedance conditions in the horn and therefore to change the polar response of the horn loudspeaker. At least one filter (12A, 12E) is provided for filtering an input signal (34) for the primary driver to produce a filtered signal for the primary driver or each of the secondary drivers. Such a filter may be chosen or designed so as to optimize some aspect of the polar response of the horn loudspeaker, for example to increase directivity, or flatten the polar response within a specified included radiation angle, or to increase omnidirectionality.Type: GrantFiled: November 25, 1998Date of Patent: September 16, 2003Assignee: Martin Audio LimitedInventors: William Webb, Paul Darlington, Oliver Wright
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Patent number: D517525Type: GrantFiled: December 12, 2003Date of Patent: March 21, 2006Assignee: Martin Audio LimitedInventors: Jason Baird, William Webb
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Patent number: D568868Type: GrantFiled: March 9, 2006Date of Patent: May 13, 2008Assignee: Martin Audio LimitedInventor: Jason Baird
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Patent number: D568869Type: GrantFiled: December 15, 2006Date of Patent: May 13, 2008Assignee: Martin Audio LimitedInventors: Philip Anthony, Bill Webb, Jason Baird
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Patent number: D568870Type: GrantFiled: December 15, 2006Date of Patent: May 13, 2008Assignee: Martin Audio LimitedInventors: Philip Anthony, Bill Webb, Jason Baird
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Patent number: D569844Type: GrantFiled: May 15, 2007Date of Patent: May 27, 2008Assignee: Martin Audio LimitedInventors: Ambrose C. T. Thompson, Peter F. Lawrence
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Patent number: D574364Type: GrantFiled: December 15, 2006Date of Patent: August 5, 2008Assignee: Martin Audio LimitedInventors: Philip Anthony, Bill Webb, Jason Baird
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Patent number: D575271Type: GrantFiled: July 5, 2007Date of Patent: August 19, 2008Assignee: Martin Audio LimitedInventors: Jason D. Baird, Christopher J. Stokes
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Patent number: D582892Type: GrantFiled: November 12, 2007Date of Patent: December 16, 2008Assignee: Martin Audio LimitedInventors: Jason D. Baird, Christopher J. Stokes
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Patent number: D499085Type: GrantFiled: July 31, 2002Date of Patent: November 30, 2004Assignee: Martin Audio LimitedInventors: Jason Baird, William Webb
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Patent number: D741293Type: GrantFiled: June 18, 2014Date of Patent: October 20, 2015Assignee: Martin Audio LimitedInventors: Jason D. Baird, Ben J. Holden
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Patent number: D767541Type: GrantFiled: October 23, 2014Date of Patent: September 27, 2016Assignee: Martin Audio LimitedInventors: Jason D. Baird, Peter F. Lawrence
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Patent number: D776086Type: GrantFiled: October 23, 2014Date of Patent: January 10, 2017Assignee: Martin Audio LimitedInventors: Jason D. Baird, Peter F. Lawrence