Playback devices having waveguides
AssigneeSonos, Inc.
InventorsMichael Chamness, Greg Flanagan, Camille Zaba, Brandon Holley
Life of this patent
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Abstract
A playback device comprises an electroacoustic transducer; an acoustic waveguide in fluid communication with the transducer; and a housing delimiting an opening of the waveguide, the opening extending around an axis passing through the transducer. The opening may have a radial distance from the axis that varies with an azimuthal angle about the axis. An acoustic path length within the waveguide, between the transducer and the opening, is substantially constant and independent of azimuthal angle about the axis.
Claims20
A playback device comprising:
- an audio transducer oriented in a vertical direction aligned with a center axis;
- and
- a housing surrounding the audio transducer, wherein the housing comprises:
- an opening;
- an acoustic waveguide arranged to provide an acoustic path between the audio transducer and the opening of the housing;
- and
- a plurality of radially extending fins, wherein at least a portion of the radially extending fins extend from the opening of the housing toward the center axis.
A playback device comprising:
- an audio transducer;
- and
- a housing surrounding the audio transducer, wherein the housing comprises a substantially circular cross-section in a plane perpendicular to a vertical direction and comprises:
- an opening;
- an acoustic waveguide arranged to provide an acoustic path between the audio transducer and the opening of the housing;
- and
- a plurality of fins arranged around the housing to cause acoustic wave fronts emitted from the opening to have a substantially uniform directivity around the opening of the housing.
A playback device comprising:
- an audio transducer;
- and
- a housing surrounding the audio transducer, wherein the housing comprises:
- an opening;
- an acoustic waveguide arranged to provide an acoustic path between the audio transducer and the opening of the housing;
- and
- a plurality of radially extending fins, wherein at least a portion of the radially extending fins extend from the opening of the housing toward a center axis.
Dependencies are inferred from the claim text.