Playback devices having waveguides
First Claim
Patent Images
1. 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.
4 Assignments
0 Petitions
Accused Products
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.
-
Citations
20 Claims
-
1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. 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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. 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.
-
Specification