Curved line array loudspeaker
AssigneeQSC Audio Products, Inc.
InventorsMark E. Engebretson, Luis F. Esparza
Life of this patent
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Abstract
A loudspeaker system consisting of a plurality of direct-radiating electro-acoustical drivers arrayed along a curved line. While in one embodiment the curved line array may be a spiral array, in another embodiment it may be any curved line array (such as an arcuate array). The acoustical drivers are directly coupled to an acoustical waveguide without use of adapters or a throat section. The waveguide and the acoustical drivers may thus be oriented along the curved line so as to produce controlled vertical and horizontal angular coverage with improved phase coherence and reduced distortion. A plurality of phase plugs may be interspersed between the plurality of acoustical drivers to assist in equalizing the sound path to achieve uniform phase at the mouth of the waveguide.
Claims35
A loudspeaker comprising:
- a plurality of electro-acoustical drivers that generate sound over a range of frequencies, wherein each of said plurality of electro-acoustical drivers include a diaphragm, and wherein said plurality of electro-acoustical drivers are disposed so as to form a curved line array;
- and
- a waveguide acoustically coupled directly to said plurality of electro-acoustical drivers, further comprising intervals between each of said plurality of electro-acoustical drivers in which each of said intervals include a prismatic frustum wedge segment extending outward from a driver mounting surface to a point no further than a mouth of said waveguide to form a linear phase plug.
A sound radiation system comprising:
- a plurality of electro-acoustical transducers disposed so as to form a curved line array;
- and
- a waveguide acoustically coupled to said plurality of electro-acoustical drivers without a throat section disposed there between, wherein said plurality of electro-acoustical transducers are interspersed by intervals each of which includes a prismatic frustum wedge segment extending outward from a driver mounting surface towards a mouth of said waveguide.
A throatless waveguide system comprising a waveguide acoustically coupled directly to a plurality of electro-acoustical drivers, wherein each of said plurality of electro-acoustical drivers are disposed so as to form a curved line array, further comprising intervals between each of said plurality of electro-acoustical drivers in which each of said intervals include a prismatic frustum wedge segment extending outward from a driver mounting surface to a point no further than a mouth of said waveguide to form a linear phase plug.
Dependencies are inferred from the claim text.