Abstract: An aerodynamic surface assembly is provided to facilitate control of the flow over the aerodynamic surface. The aerodynamic surface assembly includes an aerodynamic surface defining an outer mold line over which a fluid is to flow in a downstream direction. The outer mold line defines a smooth contour that is interrupted by step down region that is inset relative to the smooth contour defined by the outer mold line upstream thereof. The aerodynamic surface defines an orifice opening in to the step down region. The aerodynamic surface assembly may also include an overhang extending from the outer mold line of the aerodynamic surface upstream at the orifice. The overhang extends in the downstream direction and at least partially over the orifice. The aerodynamic surface assembly may also include a fluidic actuator defining a pair of curved passageways extending from an input region and are in fluid communication with the orifice.

Abstract: An inceptor apparatus and method for operating a machine, the operation of the machine providing an output from at least one inertial sensor. The apparatus comprises a stick member having a base portion, and a grip portion extending from the base portion in only one direction. The apparatus further comprises at least one sensor for generating actual stick member position data, and a control unit configured to receive an inertial force signal from the or each inertial sensor and the actual stick member position data. The control unit is operable generate a first stick member position compensation signal in dependence upon the inertial force signal and actual stick member position data.

Abstract: An aerodynamic surface assembly is provided to facilitate control of the flow over the aerodynamic surface. The aerodynamic surface assembly includes an aerodynamic surface defining an outer mold line over which a fluid is to flow in a downstream direction. The outer mold line defines a smooth contour that is interrupted by step down region that is inset relative to the smooth contour defined by the outer mold line upstream thereof. The aerodynamic surface defines an orifice opening in to the step down region. The aerodynamic surface assembly may also include an overhang extending from the outer mold line of the aerodynamic surface upstream at the orifice. The overhang extends in the downstream direction and at least partially over the orifice. The aerodynamic surface assembly may also include a fluidic actuator defining a pair of curved passageways extending from an input region and are in fluid communication with the orifice.

Abstract: An inceptor apparatus and method for operating a machine, the operation of the machine providing an output from at least one inertial sensor. The apparatus comprises a stick member having a base portion, and a grip portion extending from the base portion in only one direction. The apparatus further comprises at least one sensor for generating actual stick member position data, and a control unit configured to receive an inertial force signal from the or each inertial sensor and the actual stick member position data. The control unit is operable generate a first stick member position compensation signal in dependence upon the inertial force signal and actual stick member position data.

Abstract: A hearing aid includes a hearing aid shell, a microphone enclosed within the hearing aid shell, and a sealing member that surrounds the periphery of the microphone enclosed within the hearing aid shell, and a sealing member that surrounds the periphery of the microphone. The sealing member completely fills the area between the periphery of the microphone and the interior surface of the hearing aid shell.

Abstract: A hearing aid includes a first portion adapted for behind-the-ear placement having a microphone, a second portion adapted for in-the-canal placement having a receiver and a cable that couples the first portion to the second portion, the cable having an adjustable length.

Abstract: A hearing aid includes a circuit board having a battery affixed thereon and a switch that utilizes a portion of the circuit board as a portion of the switch. The battery is permanently affixed to the circuit board in at least one location and at least a portion of the battery is spaced away from the circuit board. The circuit board further includes at least one pair of printed switch traces. The switch is integrated into the circuit board in a way that utilizes the circuit board to form a rotary switch.

Abstract: A hearing instrument may include an enclosure adapted for behind-the-ear placement that houses a microphone for converting an acoustical input signal to an electrical signal and a sound processing circuit for processing the electrical signal; an earpiece adapted for in-the-canal placement that includes a receiver for converting the processed electrical signal to an acoustical output signal; a replaceable battery housed in the enclosure for powering the microphone, sound processing circuit and receiver; and an electrical cable extending from the enclosure that electrically couples the processed electrical signal from the sound processing circuit to the receiver. The enclosure includes a top portion and a bottom portion. The top portion and the bottom portion pivot about a hinge point at one end of the enclosure to open and closed positions. In the open position, the battery is accessible for replacement.

Abstract: A hearing aid includes a circuit board having a battery affixed thereon and a switch that utilizes a portion of the circuit board as a portion of the switch. The battery is permanently affixed to the circuit board in at least one location and at least a portion of the battery is spaced away from the circuit board. The circuit board further includes at least one pair of printed switch traces. The switch is integrated into the circuit board in a way that utilizes the circuit board to form a rotary switch.

Abstract: A hearing aid comprises a microphone that receives incident sound waves from one or more sources external to the hearing aid, and converts the sound waves into electronic signals; a circuit that amplifies the electronic signals; a receiver that converts the amplified electronic signals into amplified sound waves; and a tuned resonant cavity between the microphone and the at least one external sound source. At least one parameter of the tuned resonant cavity is selected to modify the frequency response of the incident sound waves that are received by the microphone. In particular, the geometry of one or more openings through which sound waves enter the chamber, the geometry of the chamber itself, and/or the geometry of one or more openings through which sound waves exit the chamber, are selected to condition the incident sound waves by modifying the frequency response of the audio signal prior to the signal being received at the microphone.

Abstract: A hearing aid includes a hearing aid shell, a microphone enclosed within the hearing aid shell, and a sealing member that surrounds the periphery of the microphone enclosed within the hearing aid shell, and a sealing member that surrounds the periphery of the microphone. The sealing member completely fills the area between the periphery of the microphone and the interior surface of the hearing aid shell.

Abstract: A hearing aid includes a circuit board having a battery affixed thereon and a switch that utilizes a portion of the circuit board as a portion of the switch. The battery is permanently affixed to the circuit board in at least one location and at least a portion of the battery is spaced away from the circuit board. The circuit board further includes at least one pair of printed switch traces. The switch is integrated into the circuit board in a way that utilizes the circuit board to form a rotary switch.

Abstract: A hearing aid includes a first portion adapted for behind-the-ear placement having a microphone, a second portion adapted for in-the-canal placement having a receiver and a cable that couples the first portion to the second portion, the cable having an adjustable length.

Abstract: A hearing aid comprises a microphone that receives incident sound waves from one or more sources external to the hearing aid, and converts the sound waves into electronic signals; a circuit that amplifies the electronic signals; a receiver that converts the amplified electronic signals into amplified sound waves; and a tuned resonant cavity between the microphone and the at least one external sound source. At least one parameter of the tuned resonant cavity is selected to modify the frequency response of the incident sound waves that are received by the microphone. In particular, the geometry of one or more openings through which sound waves enter the chamber, the geometry of the chamber itself, and/or the geometry of one or more openings through which sound waves exit the chamber, are selected to condition the incident sound waves by modifying the frequency response of the audio signal prior to the signal being received at the microphone.

Abstract: A hearing aid includes a circuit board having a battery affixed thereon and a switch that utilizes a portion of the circuit board as a portion of the switch. The battery is permanently affixed to the circuit board in at least one location and at least a portion of the battery is spaced away from the circuit board. The circuit board further includes at least one pair of printed switch traces. The switch is integrated into the circuit board in a way that utilizes the circuit board to form a rotary switch.

Abstract: Systems and methods for modifying fluid flowing over solid bodies are provided. A representative system incorporates a vorticity concentration-producing component and a synthetic jet actuator. The vorticity concentration-producing component is disposed on a pressure side of the solid body. The fluid flowing over the solid body remains attached to a surface of the solid body in a vicinity of the vorticity concentration-producing component. The synthetic jet actuator includes a jet housing that incorporates an internal chamber with a volume of fluid and an opening in the jet housing connecting the internal chamber to an external environment having the fluid.