Abstract: An interferometric microphone calibrator for comparison calibrating a microphone, the interferometric microphone calibrator comprising: an interferometer in optical communication with a microphone and that produces an interferometer measurement light, communicates the interferometer measurement light to the microphone, and receives an interferometer backscattered light from the microphone, such that a sensitivity of a test microphone is interferometrically calibrated to a reference microphone from the interferometer backscattered light; a preamplifier-controller in electrical communication with the microphone, and that receives a driver signal from a microphone driver and drives the microphone driver; the microphone driver in electrical communication with the preamplifier-controller and that receives a driver control signal from a calibration controller and produces the driver signal based on the driver control signal; and a calibration controller in electrical communication with the microphone driver and tha

Abstract: A speaker assembly for good thermal management in loudspeakers such as planar magnetic drivers (PMDs). The assembly comprises a front panel with one or more sound openings, one or more PMDs each associated with a respective sound opening, one or more rear thermal plates each associated with a respective PMD structure plate, and a thermal spreader plate. The PMD structure plate is mounted to the front panel, the rear thermal plate is mounted to the associated PMD structure plate, and the thermal spreader plate is mounted to the one or more rear thermal plates, thereby forming a layered heatsink assembly. In a further development, the assembly has multiple PMDs and a circuit configured to modulate power handling and frequency response between the multiple PMDs.

Abstract: Provided is an information processing device, an information processing method, and a program, the information processing device including a control unit that dynamically controls output of notification information related to a function corresponding to a gesture regarding function execution of the device based on a recognition status of an operation body that is executing the gesture in a predetermined operation region.

Abstract: The present disclosure relates to circuitry comprising: amplifier circuitry configured to receive a variable supply voltage, wherein the supply voltage varies according to an output signal of the amplifier circuitry; monitoring circuitry configured to monitor one or more parameters of an output signal of the amplifier circuitry; and processing circuitry configured to receive an indication of the voltage of the variable supply voltage and an indication of the monitored parameters from the monitoring circuitry and to apply a correction to one or more of the monitored parameters to compensate for coupling between the variable supply voltage and the monitoring circuitry.

Abstract: Provided are methods and systems for performing a series of acoustic tests in a variety of testing environments comprising several types of construction assemblies. Prior to performing each acoustic test, a plurality of audio parameters corresponding to a given construction assembly can be used to configure an electronic device that captures audio produced by the acoustic test with a microphone and stores the captured audio as a computer sound file. Further, an acoustic testing device can be used during the acoustic test to gather data indicative of a result of the acoustic test. The result can then be mapped, along with information related to the given construction assembly, to the computer sound file.

Abstract: Embodiments of the invention provide for methods for automatically controlling loudness of an audio signal. Embodiments of the invention also provide for a device for automatically controlling loudness of an audio signal. In particular, the invention relates to controlling loudness of an audio signal to be replayed within a vehicle, such as a car.

Abstract: A sound output apparatus of a vehicle may include a sensor sensing a driving speed of the vehicle and a number of revolutions of a driving motor, a storage storing opposed-phase sound sources of a noise according to the number of revolutions of the driving motor, and a controller allowing an opposed-phase sound source corresponding to the number of revolutions of the driving motor, from among the opposed-phase sound sources stored in the storage to be output when the driving speed of the vehicle exceeds a predetermined speed.

Abstract: A method and a system for augmenting an audio feed for inclusion of data therein suitable for determining an identity of a human assessor are provided. The method comprises: receiving the audio feed; receiving an indication of identity of the human assessor to whom the audio feed is to be transmitted, the indication of identity being representable by a unique sequence of bits; generating, based on the unique sequence of bits, an identity watermark associated with the human assessor to be included in the audio feed to generate an augmented audio feed, by modifying the audio signal to have predetermined energy level at each of at least two different frequency levels to indicate presence of the given bit of the unique sequence of bits associated with the human assessor in the augmented audio feed; and transmit the augmented audio feed to an electronic device associated with the human assessor.

Abstract: Disclosed herein are systems and methods for efficiently rendering audio. A method may include receiving a request to present a first audio track, wherein the first audio track is based on a first audio model comprising a shared model component and a first model component; receiving a request to present a second audio track, wherein the second audio track is based on a second audio model comprising the shared model component and a second model component; rendering a sound based on the first audio track, the second audio track, the shared model component, the first model component, and the second model component; and presenting, via one or more speakers, the an audio signal comprising the rendered sound.

Abstract: Systems, methods, and apparatus are provided for monitoring and improving one or more acoustic parameters in single- and multi-zone habitable environments. The acoustic monitoring system includes a built structure, a central control circuit, an acoustic control system, an environment database, an electronic user device, and acoustic sensor arrays which are installed within the built structure. To facilitate the sensor installation process, the built structure may be delineated into one or more zones. The central control circuit may be configured to instruct the installation of acoustic sensor arrays in particular zones within the built structure to obtain improved or even optimal or near optimal acoustic sensor array placement.

Abstract: A method comprising: at an electronic device (100) having an array microphones (101) with a plurality of microphones and a processor (102): receiving a plurality of microphone signals (x1, x2, x3) from the plurality of microphones; generating a processed signal (XP) from the plurality of microphone signals using one or both of beamforming and deconvolution; generating a compensated processed signal (XO) by compensating the processed audio signal (XP) in accordance with compensation coefficients (Z). Generating the compensated processed signal comprises: generating first spectrum values (PXP) from the processed audio signal; generating reference spectrum values (<PX>) from multiple second spectrum values (PX1, PX2, PX3) generated from each of at least two of the microphone signals in the plurality of microphone signals (x1, x2, x3); and generating the compensation coefficients (Z) from the reference spectrum values (<PX>) and the first spectrum values (PXP).

Abstract: Disclosed is a sound design method for overcoming sense of difference when there is no virtual sound while an auto cruise control is activated. The method includes determining whether an accelerator pedal is actuated; upon determining that the accelerator pedal is not actuated, determining whether an auto cruise control system is operating; upon determining whether the auto cruise control system is operating, classifying a vehicle speed-based order component from a driving sound; and reproducing a speed sensitive virtual sound based on the classified vehicle speed-based order component.

Abstract: A remote commander (RC) for a TV or other entertainment system component has a microphone. A device can query the RC for its serial number, access the Internet with the serial number to look up characteristics of the microphone, and then knowing the characteristics, use the RC microphone to detect sound such as speaker test chirps to calibrate an audio system in a convenient and user-friendly manner while achieving the accuracy of calibration that can only be obtained by using a calibrated microphone system.

Abstract: To provide a sound signal generation device capable of artificially generating an engine sound signal indicating a realistic engine sound linked to running of an electric vehicle even when, for example, an engine is not mounted at all. A virtual engine rotation speed generation unit that acquires accelerator opening data indicating an accelerator operation amount in the electric vehicle and running speed data indicating a vehicle running speed of the electric vehicle, calculates a virtual running speed of a virtual engine vehicle, modifies the virtual running speed on the basis of the running speed data, and calculates an engine rotation speed of a virtual engine on the basis of the modified virtual running speed, and an artificial engine sound generation unit that generates a sound signal for outputting an artificial engine sound corresponding to a running state of the electric vehicle on the basis of the accelerator operation amount.

Abstract: A group of devices acquire audio input of a sound, such as speech, using respective microphones. For pairs of devices in the group, intensity of energy of audio input at each of the devices in the pair is used to determine first proximity data. Relative differences in time-of-arrival of the sound at the devices in the pair is used to determine second proximity data. The first and second proximity data are used to determine an estimated closest device of the pair with respect to the sound. Comparison of the first proximity data to the second proximity also allows a confidence value to be associated with the estimated closest device. The estimated closest device with the greatest confidence value may be selected for use to acquire audio input, present output, and so forth. Additional techniques such as beamforming techniques may be applied to the audio input from the selected device.

Abstract: A system with sound adjustment capability is provided. The system includes a head-mounted device, a first loudspeaker and a processor. The first loudspeaker is detachable from the head-mounted device. The processor is configured to detect a plurality of positions and a plurality of orientations of the head-mounted device and the first loudspeaker to determine whether the first loudspeaker is detached from the head-mounted device. The processor is further configured to modify a first audio signal by at least one first filter or at least one second filter to generate a filtered first audio signal. The at least one first filter is used when the first loudspeaker is coupled to the head-mounted device, and the at least one second filter is used when the first loudspeaker is detached from the head-mounted device. The filtered first audio signal is configured to drive the first loudspeaker.

Abstract: An electronic device receives audio from an audio source and outputs the audio via speakers of the device. While outputting the audio via the speakers, the device senses its surrounding environment, and adjusts its operation, based on the sensed environment, to alert a listener wearing the device. The adjustment may comprise generation of one or more audio, visual, and/or vibration notifications to the listener using the device. A volume of the audio output via the speakers may be adjusted based on the sensed surrounding environment. The device may detect whether a first condition is present in the surrounding environment, decrease the volume when the first condition is detected in the surrounding environment, and increase the volume when the first condition is not detected in the surrounding environment.

Abstract: An autonomous mobile device (AMD) moves through a physical space without human intervention. Data from sensors on the AMD is used to determine if the AMD has collided with an obstacle. In one implementation the sensors may include a microphone. A collision may produce in the structure of the AMD a characteristic sound that is detected by the microphone and recognized as indicative of a collision. In another implementation information about velocity of the AMD and output from an inertial measurement unit (IMU) may be used to determine a characteristic change in motion that is indicative of a collision. Data from the microphone and the IMU may be combined to improve the reliability of collision detection.

Abstract: Provided is a notification technique that makes it possible to notify a person of a direction in which a danger exists, using a sound.

Abstract: A device for reducing crosstalk in an audio system that has first and second pairs of loudspeakers and first and second audio sources. The device is connected to each audio source and to at least the first pair of loudspeakers. The device includes a module for acquiring first audio signals from the first source and second audio signals from the second source, a module for determining crosstalk reduction filters resulting from a loudspeaker of the second pair, a module for calculating corrective signals, by applying the reduction filters to the second audio signals, and a module for generating corrected audio signals for the first pair, obtained from the first audio signals and corrective signals. Each reduction filter is obtained from transfer functions, each representing an acoustic path between a loudspeaker and a user's ear.