Spiral acoustic waveguide electroacoustical transducing system
AssigneeBose Corporation
InventorGeorge Nichols
Life of this patent
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Abstract
The invention features an acoustic waveguide and system for transmitting pressure wave energy produced by an electroacoustical transducer in a medium that propagates pressure wave energy. The acoustic waveguide and system includes a tube defining a spiral-shaped channel with a length of L. The tube has a first end and a second end with the first end closed and the second end open to the medium. The tube has a transducer opening for accommodating an electroacoustical transducer located between the first and second end of the tube. The system includes an electroacoustical transducer mounted to the acoustic waveguide.
Claims22
An acoustic waveguide for transmitting pressure wave energy produced by an electroacoustical transducer in a medium that propagates pressure wave energy, the waveguide comprising:
- a tube having a first end and a second end and formed in a spiral configuration, the tube having a transducer opening for accommodating an electroacoustical transducer between the first end and second end of the tube;
- wherein the tube defines a first spiral-shaped channel located between the transducer opening of the tube and the first end of the tube and a contiguous second spiral-shaped channel located between the transducer opening of the tube and the second end of the tube;
- and
- wherein the first end of the tube is closed and the second end of the tube is open to the medium.
A system for transmitting pressure wave energy in a medium that propagates pressure wave energy in a medium, the system comprising:
- an electroacoustical transducer having a vibratile surface;
- and
- a spiral waveguide comprising,
- a tube having a first end and a second end and coiled in a spiral configuration, the tube having a transducer opening acoustically coupled to the electroacoustical transducer between the first and second end of the tube;
- wherein the tube defines a first spiral-shaped channel located between the transducer opening of the tube and the first end of the tube and a contiguous second spiral-shaped channel located between the transducer opening of the tube and the second end of the tube;
- and
- wherein the first end of the tube is closed and the second end of the tube is open to the medium.
Dependencies are inferred from the claim text.