Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate
2005-10-05
2009-10-20
Ensey, Brian (Department: 2614)
Electrical audio signal processing systems and devices
Having non-electrical feature
And loudspeaker
C381S337000, C381S343000, C381S345000
Reexamination Certificate
active
07606384
ABSTRACT:
A loudspeaker system consisting of a plurality of direct-radiating electro-acoustical drivers arrayed along a spiral line. The acoustical drivers may be 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 spiral 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.
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Engebretson Mark E.
Esparza Luis F.
Crowell & Moring LLP
Eason Matthew
Ensey Brian
QSC Audio Products, Inc.
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