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US 9,883,282 B2Granted
Acoustic deflector for omni-directional speaker system
AssigneeBose Corporation
InventorsBulent Goksel, Wontak Kim, Joseph Jankovsky
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Abstract
An omni-directional acoustic deflector includes an acoustically reflective body that has a truncated conical shape which includes a substantially conical outer surface that is configured to be disposed adjacent an acoustically radiating surface (e.g., a diaphragm) of an acoustic driver thereby to define an acoustic radiation path therebetween. The acoustically reflective body is profiled such that a cross-sectional area of the acoustic radiation path increases monotonically with respect to radial distance from a motion axis of the acoustic driver.
Claims16
An omni-directional acoustic deflector, comprising:
- an acoustically reflective body having a truncated conical shape including a substantially conical outer surface configured to be disposed adjacent an acoustically radiating surface of an acoustic driver thereby to define an acoustic radiation path therebetween,
- wherein the acoustically reflective body is profiled such that a cross-sectional area of the acoustic radiation path increases monotonically with respect to radial distance from a motion axis of the acoustic driver,
- wherein the substantially conical outer surface has a non-linear slant profile wherein the cross-sectional area of the acoustic radiation path increases in a nonlinear fashion with respect to distance from a motion axis of the acoustic driver, and
- wherein the substantially conical outer surface has a substantially parabolic profile, wherein the cross-sectional area of the acoustic radiation path increases in a highly nonlinear fashion with respect to distance from the motion axis of the acoustic driver.
1 more element
An omni-directional acoustic deflector, comprising:
- an acoustically reflective body having a truncated conical shape including a substantially conical outer surface configured to be disposed adjacent an acoustically radiating surface of an acoustic driver thereby to define an acoustic radiation path therebetween,
- wherein the acoustically reflective body is profiled such that a cross-sectional area of the acoustic radiation path increases monotonically with respect to radial distance from a motion axis of the acoustic driver,
- wherein the acoustically reflective body comprises one or more features that extend into the acoustic radiation path and which disrupt a circular symmetry of the acoustic body, and thereby reduce the ability of the acoustic radiation path to support circularly symmetric modes.
An omni-directional acoustic deflector, comprising:
- an acoustically reflective body having a truncated conical shape including a substantially conical outer surface configured to be disposed adjacent an acoustically radiating surface of an acoustic driver thereby to define an acoustic radiation path therebetween,
- wherein the acoustically reflective body is profiled such that a cross-sectional area of the acoustic radiation path increases monotonically with respect to radial distance from a motion axis of the acoustic driver,
- wherein the acoustically reflective body comprises a top surface configured to be centered with respect to a motion axis of the acoustic driver, the acoustically reflective body having an opening in the top surface, and the omni-directional deflector further comprising an acoustically absorbing material disposed at the opening in the top surface.
A speaker system comprising:
- an acoustic enclosure;
- an acoustic driver disposed coupled to the acoustic enclosure;
- and
- an omni-directional acoustic deflector coupled to the acoustic enclosure adjacent the acoustic driver to receive acoustic energy propagating from the acoustic driver, the omni-directional acoustic deflector comprising:
- an acoustically reflective body having a truncated conical shape including a substantially conical outer surface configured to be disposed adjacent an acoustically radiating surface of the acoustic driver thereby to define an acoustic radiation path therebetween,
- wherein a slope of a profile of the substantially conical outer surface does not correspond to that of the acoustically radiating surface,
- wherein the substantially conical outer surface comprises a non-linear profile, and
- wherein the substantially conical outer surface has a substantially parabolic profile.
5 more elements
A speaker system comprising:
- an acoustic enclosure;
- an acoustic driver disposed coupled to the acoustic enclosure;
- and
- an omni-directional acoustic deflector coupled to the acoustic enclosure adjacent the acoustic driver to receive acoustic energy propagating from the acoustic driver, the omni-directional acoustic deflector comprising:
- an acoustically reflective body having a truncated conical shape including a substantially conical outer surface configured to be disposed adjacent an acoustically radiating surface of the acoustic driver thereby to define an acoustic radiation path therebetween,
- wherein a slope of a profile of the substantially conical outer surface does not correspond to that of the acoustically radiating surface,
- wherein the acoustically reflective body comprises one or more features that extend into the acoustic radiation path and which disrupt a circular symmetry of the acoustic body, and thereby reduce the ability of the acoustic radiation path to support circularly symmetric modes.
4 more elements
Dependencies are inferred from the claim text.