Abstract: In one aspect, a system includes a movable barrier operator configured to open and close a movable barrier; at least one ultra-wideband device associated with the movable barrier operator and electrically configured to receive ultra-wideband radio frequency signals; and a processor operatively connected to the at least one ultra-wideband device and configured to use the ultra-wideband radio signals to determine a status of the movable barrier.

Abstract: A method for manufacturing a loudspeaker includes creating a dual-layered fabric having an acoustic resistance by attaching a first fabric having a first acoustic resistance to a second fabric having a second acoustic resistance lower than the first acoustic resistance. The method further includes applying a coating material to a first portion of the dual-layered fabric. The coating material forms a pattern on the first portion of the dual-layered fabric that changes the acoustic resistance of the dual-layered fabric along at least one of: a length and radius of the dual-layered fabric.

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.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

Abstract: An in-ear headphone comprises an earbud body constructed and arranged for positioning in an ear canal of a wearer, and configured to have a distal end farther into the ear canal than a proximal end. The earbud body includes a cavity and an opening to the cavity. The in-ear headphone further comprises a transducer in the opening to the cavity, a portion of the transducer facing outward from the opening; a microphone at the distal end of the earbud body; an earbud tip on the earbud body and complying with a surface of the earbud body; and an acoustically resistive mesh structure at a distal end of the earbud tip. The mesh structure covers the microphone and the portion of the transducer facing outward from the opening.

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.

Abstract: A directional acoustic device that has an acoustic source or an acoustic receiver, and a conduit to which the acoustic source or acoustic receiver is acoustically coupled and within which acoustic energy travels in a propagation direction from the acoustic source or to the acoustic receiver, the conduit having finite extent at which the conduit structure ends. The conduit has a radiating portion that has a radiating surface with leak openings that define controlled leaks through which acoustic energy radiated from the source into the conduit can leak to the outside environment or through which acoustic energy in the outside environment can leak into the conduit. The only path for acoustic energy in the conduit to reach the external environment or acoustic energy in the external environment to enter the conduit is through the controlled leaks.

Abstract: A method for manufacturing a loudspeaker includes creating a dual-layered fabric having an acoustic resistance by attaching a first fabric having a first acoustic resistance to a second fabric having a second acoustic resistance lower than the first acoustic resistance. The method further includes applying a coating material to a first portion of the dual-layered fabric. The coating material forms a pattern on the first portion of the dual-layered fabric that changes the acoustic resistance of the dual-layered fabric along at least one of: a length and radius of the dual-layered fabric.

Abstract: A directional acoustic device that has an acoustic source or an acoustic receiver, and a conduit to which the acoustic source or acoustic receiver is acoustically coupled and within which acoustic energy travels in a propagation direction from the acoustic source or to the acoustic receiver, the conduit having finite extent at which the conduit structure ends. The conduit has a radiating portion that has a radiating surface with leak openings that define controlled leaks through which acoustic energy radiated from the source into the conduit can leak to the outside environment or through which acoustic energy in the outside environment can leak into the conduit. The only path for acoustic energy in the conduit to reach the external environment or acoustic energy in the external environment to enter the conduit is through the controlled leaks.

Abstract: An acoustic horn. In one implementation, the horn includes at least four wall sections, defining a passageway. The cross-sectional area of the mouth is at least ten times the cross sectional area of the throat. The wall sections are dimensioned so that at least one wall section has a dimension at the throat at least ten times a dimension at the throat of a second wall section. In another implementation the cross-section at the mouth is elongated and is be bounded by a continuous curve defining a geometric figure having a major axis at least ten times a minor axis.

Abstract: An acoustic horn. In one implementation, the horn includes at least four wall sections, defining a passageway. The cross-sectional area of the mouth is at least ten times the cross sectional area of the throat. The wall sections are dimensioned so that at least one wall section has a dimension at the throat at least ten times a dimension at the throat of a second wall section. In another implementation the cross-section at the mouth is elongated and is be bounded by a continuous curve defining a geometric figure having a major axis at least ten times a minor axis.

Abstract: An three-way audio system that uses directional arrays for radiating mid-frequency acoustic energy and passive directional devices to radiate the high frequencies. the system includes a left channel, a right channel, and a center channel. A crossover network separates the left channel and the right channel into low frequency content, midrange frequency content, and high frequency content. An omnidirectional acoustical device radiates acoustic energy corresponding to the low frequency content of the combined left channel, right channel and center channel. A first directional array, comprising signal processing circuitry and more than one acoustic driver, radiates acoustic energy corresponding to the midrange content of one of the left channel and right channel signal so that more acoustic energy corresponding to the midrange content of one of the left channel signal and the right channel signal is radiated laterally than in other directions.

Abstract: An audio system for a television using a pipe type passive directional acoustic device mounted in a television cabinet. The slotted pipe type passive directional acoustic device includes a first acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The first pipe includes an elongated opening along at least a portion of the length of the pipe. Acoustically resistive material is in the opening. Pressure waves are radiated to the environment through the opening. The pressure waves are characterized by a volume velocity. The pipe, the opening, and the acoustically resistive material are configured so that the volume velocity is substantially constant along the length of the pipe. The passive directional acoustic devices directionally radiate sound waves laterally from the television cabinet.

Abstract: An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe.

Abstract: An audio system for a television using a pipe type passive directional acoustic device mounted in a television cabinet. The slotted pipe type passive directional acoustic device includes a first acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The first pipe includes an elongated opening along at least a portion of the length of the pipe. Acoustically resistive material is in the opening. Pressure waves are radiated to the environment through the opening. The pressure waves are characterized by a volume velocity. The pipe, the opening, and the acoustically resistive material are configured so that the volume velocity is substantially constant along the length of the pipe. The passive directional acoustic devices directionally radiate sound waves laterally from the television cabinet.

Abstract: An audio system for a television using a pipe type passive directional acoustic device mounted in a television cabinet. The slotted pipe type passive directional acoustic device includes a first acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The first pipe includes an elongated opening along at least a portion of the length of the pipe. Acoustically resistive material is in the opening. Pressure waves are radiated to the environment through the opening. The pressure waves are characterized by a volume velocity. The pipe, the opening, and the acoustically resistive material are configured so that the volume velocity is substantially constant along the length of the pipe. The passive directional acoustic devices directionally radiate sound waves laterally from the television cabinet.