Abstract: Methods and systems are provided for controlling rail-voltages for amplifier output stages. In some examples, a method may include receiving sets of data values (e.g., at a power-supply control circuitry) for control of a rail voltage of an amplifier output stage. The method may also include determining that the receipt of a pending set of data values has been interrupted. Then, upon the determination that the receipt of the pending plurality of data values has been interrupted, the method may include decreasing the rail voltage to a non-boosted rail-voltage level.

Abstract: A vehicle display system may include a light guide, a quantum dot film arranged adjacent with the light guide and configured to receive blue light from the light guide and convert the blue light to red and green light, at least one buffer film, and a blue color filter arranged between the quantum dot film and the at least one buffer film, the blue color filter configured to transmit blue light back to the quantum dot film to further convert the red and green light.

Abstract: In at least one embodiment, a multi-stage sound and vibration sensor is provided. The multi-stage sound and vibration sensor includes a housing, a first piezo-diaphragm and a second piezo diaphragm. The first piezo-diaphragm and the second piezo-diaphragm are positioned in the housing to detect an input signal including audio or vibrations. The first piezo-diaphragm and the second piezo-diaphragm provide a first resonance frequency and a second resonance frequency in response to detecting the audio or the vibrations.

Abstract: An active noise cancellation (ANC) system is provided with at least one loudspeaker to project an anti-noise sound within a room in response to receiving an anti-noise signal. A first controller is programmed to adjust a transfer function indicative of a secondary path between the at least one loudspeaker and at least one microphone within the room based on a resonance frequency of the at least one loudspeaker, and to generate the anti-noise signal based on the adjusted transfer function.

Abstract: A loudspeaker parameter system for vented box driver excursion modeling, may include a loudspeaker driver having a conductor, a magnet and a diaphragm. The system may further include a processor for excursion modeling configured to receive an input signal, determine a voltage level of the input signal, an enclosure having a resonant port, estimate port parameters including at least one of an acoustic resistance or acoustic mass, and apply a voltage limit based on the vented box excursion model utilizing the port parameters.

Abstract: In at least one embodiment, a system for controlling aspects of a virtual concert is provided. The apparatus includes one or more controllers and at least one computing device. The one or more controllers are positioned in a venue and are configured to control features of a live performance at the venue based on at least one first signal. The at least one computing device is programmed to receive a second signal indicative of a command to control at least a portion of the live performance from directly from a user that is remote from the venue and to transmit the at least one first signal to the one or more controllers to control the features of the live performance.

Abstract: A loudspeaker assembly for attachment to an exterior portion of a vehicle. The assembly including a loudspeaker, a base enclosure, and a grille enclosure. The loudspeaker transmits an audio output into an environment that is exterior to the vehicle. The base enclosure receives the loudspeaker and includes a first ramped surface formed on an exterior portion thereof. The grille enclosure includes an integrated loudspeaker grille to cover the loudspeaker. The grille enclosure further includes a second ramped surface positioned on an exterior portion thereof and being positioned directly adjacent to the first ramped surface of the base enclosure when the base enclosure is coupled to the grille enclosure. Each of the first ramped surface and the second ramped surface is non-perpendicular to the integrated loudspeaker grille.

Abstract: One or more embodiments include techniques for generating immersive audio for an acoustic system. The techniques include determining an apparent location associated with a portion of audio; calculating, for each speaker included in a plurality of speakers of the acoustic system, a perceptual distance between the speaker and the apparent location; selecting a subset of speakers included in the plurality of speakers based on the perceptual distances between the plurality of speakers and the apparent location; generating a set of filters based on the subset of speakers and one or more target characteristics of the acoustic system; and generating, for each speaker included in the subset of speakers, a speaker signal using one or more filters included in the set of filters.

Abstract: A virtual private assistant (VPA) is configured to analyze various types of input that indicate one or more behaviors associated with a user and to determine the emotional state of the user based on the input. The VPA also determines one or more operations to perform on behalf of the user based on the input and the determined emotional state. The VPA then executes the one or more operations and synthesizes an output based on the emotional state of the user and the one or more operations. The synthesized output includes one or more semantic components and one or more emotional components derived from the emotional state of the user. The VPA observes the behavior of the user in response to the synthesized output and then implements various modifications, based on the observed behavior, to improve the effectiveness of future interactions with the user.

Abstract: A method for calibrating an in-ear headphone to improve the frequency response heard by a user. The method including generating a sound signal and playing the sound signal at a driver when the in-ear headphone is placed within a user's ear canal, receiving a reflected sound signal at a first microphone, generating a frequency response based on the reflected sound signal, generating the user's ear drum response based on the frequency response, generating a second sound signal, modifying the second sound signal based on the user's ear drum response, and playing the modified second sound signal at the driver.

Abstract: In at least one embodiment, a system for remotely creating an audio and video mix of a live performance is provided. A media controller is positioned in a venue and being programmed to transmit one or more audio streams and one or more video streams for a live performance at the venue. A server is programmed to receive the one or more audio streams and the one or more video streams from the venue and to transmit the one or more audio streams and the one or more video streams to a streaming platform. A computing device being programmed to play back the modified at least one of the audio properties of the one or more audio streams and the video properties of the one or more video streams for the user.

Abstract: Various systems and methods are provided for determining a posture of an occupant of a vehicle. In one embodiment, a method comprises capturing images of an occupant in a vehicle via a vehicle camera, determining a current posture of the occupant and a recommended posture for the occupant based on the captured images and body measurements of the occupant, and outputting a guidance based on a difference between the current posture and the recommended posture. In this way, a comfort of the occupant may be increased by guiding the occupant toward a more ergonomic posture.

Abstract: A vehicle loudspeaker system, including at least two microphones forming a microphone array, at least one loudspeaker configured to emit non-human sound, a processor programmed to receive incoming audio signals from the microphone array. The processor further programmed to apply beamforming to the incoming audio signals, determine whether human generated sound is detected within the audio signal, and instruct the loudspeaker to adjust the non-human sound in response to human generated sound being detected.

Abstract: A modular input interface device having multi-axial functionality in a housing having an input interface that is capable of up to seven directions of movement. The modular interface device provides input to at least one processor associated with one or more vehicle systems.

Abstract: A personal assistant device configured to control companion devices may include a memory configured to maintain a companion device library including a plurality of companion device each associated with at least one long-name, short-cut name and companion device room location, and a processor. The processor may be configured to receive a user command from a microphone, extract a companion device name and action from the user command, determine whether the companion device name includes a unique name, and command a companion device associated with the unique name to perform the action from the user command in response to the user command including the unique name.

Abstract: A loudspeaker arrangement comprises a transducer arranged in a loudspeaker enclosure, the loudspeaker enclosure enclosing a rear part of the transducer, and an aperture-defining structure (hereinafter, the aperture) mounted on a front side of the transducer in a direction of propagation of sound emitted by the transducer. The transducer is configured to emit sound within a wide frequency range, and at frequencies of above a predetermined threshold. The aperture is configured to amplify sound at predetermined frequencies or within a predetermined frequency range within the wide frequency range, and to let sound at all other frequencies within the wide frequency range pass essentially unaltered. The loudspeaker enclosure is sized such that the resonance frequency of the loudspeaker enclosure matches the resonance frequency of the transducer in free air, wherein the resonance frequency of the transducer in free air is below the predetermined threshold.

Abstract: In at least one embodiment, a system for synchronizing an audio stream is provided. The system includes a first loudspeaker and an audio controller. The first loudspeaker plays back a first audio output signal including first signature information. The audio controller provides a first audio input signal and superimpose the first signature information on the first audio input signal. The audio controller receives the first audio output signal including the first audio packets and the first signature information and to detect the first signature information. The audio controller determines a delay attributed to a transmission of the first audio input signal and the first audio output signal based on the first signature information and synchronizes the transmission of a second audio input signal from the audio controller to the first loudspeaker with the playback of another audio output signal from a second loudspeaker based at least on the delay.

Abstract: An electronic device having at least one circuit board. The circuit board has a predetermined pattern of solder bumps facilitating a ground connection with a first enclosure member and/or a second enclosure member. The at least one circuit board is sandwiched between the first and second enclosure members, each of the first and second enclosure members has a surface facing the circuit board and the surface facing the circuit board has a bead extending therefrom contacting the predetermined pattern of solder bumps to complete the ground connection.