Isophasic waveguide for a loudspeaker
AssigneeEaw North America, Inc.
InventorsSteven Desrosiers, Geoffrey Peter McKinnon, Zhao Zuo
Life of this patent
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Abstract
A waveguide (1) comprising a shell (11, 12) having an inlet opening (110, 120) intended to receive acoustic energy and an outlet opening (111, 121) for emitting acoustic energy; and a phase plug (13, 14) located into the shell (11, 12) so as to define therebetween a pathway (W) for the acoustic energy from the inlet opening (110, 120) to the outlet opening (111, 121). The acoustic pathway (W) has a longitudinal extension direction (D) between the openings (110, 120, 111, 121) and the directions of all longitudinal splines (S1, S2, S3, S4, S5, S6) of the pathway (W) are perpendicular to the inlet opening (110, 120) at the inlet opening (110, 120) on one ideal longitudinal surface.
Claims27
A waveguide comprising:
- at least a shell having an inlet opening configured to receive acoustic energy and an outlet opening for emitting acoustic energy;
- and
- a phase plug located within said shell so as to define therebetween a pathway for the acoustic energy from said inlet opening to said outlet opening;
- wherein the acoustic pathway has a longitudinal extension direction between said openings, and
- wherein directions of all longitudinal splines of the pathway are perpendicular to said inlet opening at said inlet opening on at least one ideal longitudinal surface.
Dependencies are inferred from the claim text.