Abstract: Various implementations include systems for rendering 3D audio signals for a vehicle operator. In particular implementations, a method of spatializing audio for an audio device worn on a head of an operator includes: receiving audio data and location data, the location data indicating where the audio data should be rendered relative to the vehicle; tracking a head position of the operator of the vehicle; calculating a compensated location of where the audio data should be rendered based on the location data and the head position of the operator of the vehicle; and spatially rendering, using the audio device, the audio data at the compensated location.

Abstract: Various implementations include systems for rendering 3D audio signals for a vehicle operator. In particular implementations, a method of spatializing audio for an audio device worn on a head of an operator includes: receiving audio data and location data, the location data indicating where the audio data should be rendered relative to the vehicle; tracking a head position of the operator of the vehicle; calculating a compensated location of where the audio data should be rendered based on the location data and the head position of the operator of the vehicle; and spatially rendering, using the audio device, the audio data at the compensated location.

Abstract: Various implementations include approaches for monitoring the workload of a pilot, such as an aircraft pilot. Certain approaches include: receiving flight condition data and aircraft configuration data about an aircraft; comparing the flight condition data and aircraft configuration data with corresponding thresholds to determine flight condition and aircraft configuration workload components; applying respective weights to the flight condition and aircraft configuration workload components; and providing a report indicating a workload for the pilot based upon the weighted flight condition and aircraft configuration workload components.

Abstract: Various implementations include approaches for monitoring the workload of a pilot, such as an aircraft pilot. Certain approaches include: receiving flight condition data and aircraft configuration data about an aircraft; comparing the flight condition data and aircraft configuration data with corresponding thresholds to determine flight condition and aircraft configuration workload components; applying respective weights to the flight condition and aircraft configuration workload components; and providing a report indicating a workload for the pilot based upon the weighted flight condition and aircraft configuration workload components.

Abstract: Various implementations include approaches for monitoring the workload of a pilot, such as an aircraft pilot. Certain approaches include: receiving flight condition data and aircraft configuration data about an aircraft; comparing the flight condition data and aircraft configuration data with corresponding thresholds to determine flight condition and aircraft configuration workload components; applying respective weights to the flight condition and aircraft configuration workload components; and providing a report indicating a workload for the pilot based upon the weighted flight condition and aircraft configuration workload components.

Abstract: A circuit includes an input for receiving power from an external power supply, a voltage regulator coupled to the power input and providing regulated voltage to an external circuit and to the power supply control circuit itself, and a first switch coupled between ground and an Enable input of the voltage regulator. A control input of the first switch is coupled to the regulated voltage, such that when the voltage regulator provides regulated voltage, the first switch is closed, coupling the Enable input to ground, keeping the voltage regulator active. A first switching circuit provides manual activation and deactivation of the voltage regulator; a second switching circuit provides automatic activation of the voltage regulator whenever the power input becomes powered. An intervening circuit prevents the second switching circuit from activating the voltage regulator when the first switching circuit has deactivated it, despite the continued presence of the external power supply.

Abstract: The technology described in this document can be embodied in a method that includes receiving a first signal representative of audio captured using a microphone in communication with an analog communication module. The method also includes determining that a first feedback signal from the analog communication module includes a sidetone associated with the audio captured by the microphone, and responsive to determining that the first feedback signal includes the sidetone, generating, by one or more processing devices, at least one control signal that affects operations of a digital communication module.

Abstract: The technology described in this document can be embodied in a method that includes receiving a first signal representative of audio captured using a microphone in communication with an analog communication module. The method also includes determining that a first feedback signal from the analog communication module includes a sidetone associated with the audio captured by the microphone, and responsive to determining that the first feedback signal includes the sidetone, generating, by one or more processing devices, at least one control signal that affects operations of a digital communication module.

Abstract: A microphone pivot device of a headphone comprises at least one magnet in communication with a movable microphone, the at least one magnet having a plurality of segments, each segment having a magnet characteristic; a sensor that detects a magnet characteristic of a magnet segment when the segment is moved in response to a movement of the microphone so that the segment is in proximity of the sensor; and a controller that receives a signal from the sensor in response to the detected magnet characteristic, and that controls an operation of the microphone in response to the received signal.

Abstract: A microphone pivot device of a headphone comprises at least one magnet in communication with a movable microphone, the at least one magnet having a plurality of segments, each segment having a magnet characteristic; a sensor that detects a magnet characteristic of a magnet segment when the segment is moved in response to a movement of the microphone so that the segment is in proximity of the sensor; and a controller that receives a signal from the sensor in response to the detected magnet characteristic, and that controls an operation of the microphone in response to the received signal.

Abstract: A circuit includes an input for receiving power from an external power supply, a voltage regulator coupled to the power input and providing regulated voltage to an external circuit and to the power supply control circuit itself, and a first switch coupled between ground and an Enable input of the voltage regulator. A control input of the first switch is coupled to the regulated voltage, such that when the voltage regulator provides regulated voltage, the first switch is closed, coupling the Enable input to ground, keeping the voltage regulator active. A first switching circuit provides manual activation and deactivation of the voltage regulator; a second switching circuit provides automatic activation of the voltage regulator whenever the power input becomes powered. An intervening circuit prevents the second switching circuit from activating the voltage regulator when the first switching circuit has deactivated it, despite the continued presence of the external power supply.

Abstract: A circuit includes an input for receiving power from an external power supply, a voltage regulator coupled to the power input and providing regulated voltage to an external circuit and to the power supply control circuit itself, and a first switch coupled between ground and an Enable input of the voltage regulator. A control input of the first switch is coupled to the regulated voltage, such that when the voltage regulator provides regulated voltage, the first switch is closed, coupling the Enable input to ground, keeping the voltage regulator active. A first switching circuit provides manual activation and deactivation of the voltage regulator; a second switching circuit provides automatic activation of the voltage regulator whenever the power input becomes powered. An intervening circuit prevents the second switching circuit from activating the voltage regulator when the first switching circuit has deactivated it, despite the continued presence of the external power supply.

Abstract: The technology described in this document can be embodied in a method that includes receiving a first signal representative of audio captured using a microphone in communication with an analog communication module. The method also includes determining that a first feedback signal from the analog communication module includes a sidetone associated with the audio captured by the microphone, and responsive to determining that the first feedback signal includes the sidetone, generating, by one or more processing devices, at least one control signal that affects operations of a digital communication module.

Abstract: A circuit includes an input for receiving power from an external power supply, a voltage regulator coupled to the power input and providing regulated voltage to an external circuit and to the power supply control circuit itself, and a first switch coupled between ground and an Enable input of the voltage regulator. A control input of the first switch is coupled to the regulated voltage, such that when the voltage regulator provides regulated voltage, the first switch is closed, coupling the Enable input to ground, keeping the voltage regulator active. A first switching circuit provides manual activation and deactivation of the voltage regulator; a second switching circuit provides automatic activation of the voltage regulator whenever the power input becomes powered. An intervening circuit prevents the second switching circuit from activating the voltage regulator when the first switching circuit has deactivated it, despite the continued presence of the external power supply.

Abstract: A device for coupling to a connector on an ear cup of a headset includes a mating connector corresponding to the connector of the headset. The mating connector includes a crossover conductor coupled to a first and a second terminal within the mating connector, a position sensor for determining a position of the device, and a data connection outputting data from the position sensor. The position data is usable to adjust three-dimensional audio signals to account for the direction the user is looking.

Abstract: A device for coupling to a connector on an ear cup of a headset includes a mating connector corresponding to the connector of the headset. The mating connector includes a crossover conductor coupled to a first and a second terminal within the mating connector. One or more accessory circuits is provided by the device, including a lamp configured to direct light onto a surface external to the device or a position detection circuit usable to adjust three-dimensional audio signals to account for the direction the user is looking.

Abstract: A device for coupling to a connector on an ear cup of a headset includes a mating connector corresponding to the connector of the headset. The mating connector includes a crossover conductor coupled to a first and a second terminal within the mating connector. One or more accessory circuits is provided by the device, including a lamp configured to direct light onto a surface external to the device or a position detection circuit usable to adjust three-dimensional audio signals to account for the direction the user is looking.