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 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 and having a radial distance from the axis that varies with an azimuthal angle about the axis,
- wherein an acoustic path length within the waveguide, between the transducer and the opening, is substantially constant and independent of azimuthal angle about the axis.
A playback device comprising:
- an electroacoustic transducer;
- an acoustic waveguide in fluid communication with the transducer;
- a housing delimiting an opening of the waveguide, the opening extending around an axis passing through the transducer and having a radial distance from the axis that varies with an azimuthal angle about the axis, wherein the waveguide is bounded on one side by an axial wall;
- and
- an absorber disposed between the axis and the axial wall and configured to attenuate acoustic waves within a predetermined frequency band, thereby reducing a variation of intensity around the axis of acoustic waves generated by the transducer and emitted from the opening within the predetermined frequency band.
A playback device comprising:
- 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,
- wherein the opening has a dimension in a direction aligned with the axis that varies with an azimuthal angle about the axis, thereby reducing a variation of intensity around the axis of acoustic waves generated by the transducer and emitted from the opening.
Dependencies are inferred from the claim text.