Abstract: A head-mounted device is provided that includes displays configured to display an image and to simultaneously display a magnifying window that presents a magnified portion of the image. The magnifying window lies in a magnification plane that is fixed relative to a user's head. One or more processors in the head-mounted device can be used to perform a first ray cast operation to identify an input point where a detected user input intersects the magnifying window, to obtain a remapped point from the input point, to compute a directional vector based on the remapped point and a reference point associated with the user's head, to obtain a shifted point by shifting the remapped point from the magnification plane to another plane parallel to the magnification plane, and to perform a second ray cast operation using the shifted point and the directional vector.

Abstract: Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cone having a surface area configured to radiate acoustic energy; a suspension coupled to the cone; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the cone of approximately 6.0 millimeters (mm) or less, wherein the surface area of the cone is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the cone.

Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and a stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.

Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and has a substantially planar shape when the diaphragm is at rest. A stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.

Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and has a substantially planar shape when the diaphragm is at rest. A stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.

Abstract: A microphone adaptor comprises a body having a first end, a second end, and an opening extending from the first end to the second end. The second end is in communication with an electro-acoustic driver. A coupling mechanism is at the first end of the body for receiving a sensing microphone and securing the microphone against the body at a predetermined fixed distance from the electro-acoustic driver.

Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and has a substantially planar shape when the diaphragm is at rest. A stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.

Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and has a substantially planar shape when the diaphragm is at rest. A stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.

Abstract: A microphone adaptor comprises a body having a first end, a second end, and an opening extending from the first end to the second end. The second end is in communication with an electro-acoustic driver. A coupling mechanism is at the first end of the body for receiving a sensing microphone and securing the microphone against the body at a predetermined fixed distance from the electro-acoustic driver.

Abstract: An electro-acoustic transducer is provided that comprises a diaphragm and a magnet assembly comprising a magnet and a back plate. The back plate comprises at least one first vent. The diaphragm generates sound during a movement of the diaphragm relative to the back plate. The transducer further comprises a printed circuit board comprising at least one second vent and a cavity between the printed circuit board and the back plate that separates the at least one first vent from the at least one second vent.

Abstract: An electro-acoustic transducer is provided that comprises a diaphragm and a magnet assembly comprising a magnet and a back plate. The back plate comprises at least one first vent. The diaphragm generates sound during a movement of the diaphragm relative to the back plate. The transducer further comprises a printed circuit board comprising at least one second vent and a cavity between the printed circuit board and the back plate that separates the at least one first vent from the at least one second vent.

Abstract: A system for monitoring compliance with handwashing protocols by a plurality of workers, each worker carrying a wireless tag having a worker identifier, the monitoring being performed in a facility having a plurality of areas, the system comprising a plurality of wireless tag reader/transmitters each having an area identifier, at least one wireless tag reader/transmitter being positioned in each of the areas and each wireless tag reader/transmitter being capable of reading the worker identifier stored in the wireless tag when the worker is within range of the wireless tag reader/transmitter and further capable of transmitting the worker and area identifiers to at least one computing device; and at least one of said wireless tag reader/transmitters being disposed at a handwashing station; wherein the at least one wireless tag reader/transmitter reads the worker identifier when the worker manipulates a device at the handwashing station dispensing a washing substance and transmits the worker and area identifiers

Abstract: A system for monitoring compliance by a plurality of workers carrying wireless tags having worker identifiers with handwashing protocols in a facility having a plurality of areas. The system includes a plurality of wireless tag reader/transmitters having area identifiers for reading the worker identifiers stored in the wireless tags when the worker is positioned a predetermined distance from any of the plurality of wireless tag reader/transmitters and transmitting worker and area identifiers to at least one computing device; and at least one cleanser dispensing apparatus positioned in an area having at least one wireless tag reader/transmitter, the at least one cleanser dispensing apparatus alerting the at least one wireless tag reader/transmitter to read the worker identifiers and transmitting the worker and area identifiers.

Abstract: A system for monitoring compliance with handwashing protocols by a plurality of workers, each worker carrying a wireless tag having a worker identifier, the monitoring being performed in a facility having a plurality of areas, the system comprising a plurality of wireless tag reader/transmitters each having an area identifier, at least one wireless tag reader/transmitter being positioned in each of the areas and each wireless tag reader/transmitter being capable of reading the worker identifier stored in the wireless tag when the worker is within range of the wireless tag reader/transmitter and further capable of transmitting the worker and area identifiers to at least one computing device; and at least one of said wireless tag reader/transmitters being disposed at a handwashing station; wherein the at least one wireless tag reader/transmitter reads the worker identifier when the worker manipulates a device at the handwashing station dispensing a washing substance and transmits the worker and area identifiers

Abstract: A system for monitoring compliance by a plurality of workers carrying wireless tags having worker identifiers with handwashing protocols in a facility having a plurality of areas. The system includes a plurality of wireless tag reader/transmitters having area identifiers for reading the worker identifiers stored in the wireless tags when the worker is positioned a predetermined distance from any of the plurality of wireless tag reader/transmitters and transmitting worker and area identifiers to at least one computing device; and at least one cleanser dispensing apparatus positioned in an area having at least one wireless tag reader/transmitter, the at least one cleanser dispensing apparatus alerting the at least one wireless tag reader/transmitter to read the worker identifiers and transmitting the worker and area identifiers.