Abstract: An acoustic device includes a detection unit configured to detect a timing to transition to each of a first power-saving mode and a second power-saving mode, a battery, a monitoring unit configured to monitor a remaining capacity of the battery, a signal processing unit configured to process a sound signal, a sound emitting unit configured to acoustically output the processed sound signal, a communication unit configured to transmit and receive a signal to and from a communication terminal and transmit the processed sound signal to the communication terminal, and a control unit configured to stop an operation of the signal processing unit based on the detection of the timing to transition to the first power-saving mode.

Abstract: Embodiments are provided for receiving a request to output audio at a first speaker and a second speaker of an electronic device, determining that the electronic device is oriented in a portrait orientation or a landscape orientation, identifying, based on the determined orientation, a first equalization setting for the first speaker and a second equalization setting for the second speaker, providing, for output at the first speaker, a first audio signal with the first equalization setting, and providing, for output at the second speaker, a second audio signal with the second equalization setting.

Abstract: A method of using an earbud to maintain a user's authenticated session comprises, after establishing a user's first authenticated session in a first computing device, broadcasting an initial ultrasonic signal from a speaker of the earbud. At least a subsequent ultrasonic echo signal that is received at an in-ear microphone of the earbud is analyzed to determine if the earbud is located in an ear of the user. The method determines that the earbud is within a predetermined distance of the second computing device. At least on condition of determining that the earbud is located in the ear of the user and that the earbud is within the predetermined distance of the second computing device, a user's second authenticated session in a second computing device is established.

Abstract: An audio device can sense sound in a physical environment using a plurality of microphones to generate a plurality of microphone signals. Clean speech can be extracted from microphone signals. Ambience can be extracted from the microphone signals. The clean speech can be encoded at a first compression level. The ambience can be encoded at a second compression level that is higher than the first compression level. Other aspects are also described and claimed.

Abstract: A transmission line includes an equalization circuit. The equalization circuit is a second-order equalization circuit having a first loop at a gain element and a second loop at the gain element. The first loop may include a first compensation capacitor, and the second loop may include a second compensation capacitor and a resistor. The second order equalization circuit may allow for improved performance with respect to gain as well as reduced power usage.

Abstract: A method of operating a display apparatus includes: transmitting stereo data corresponding to first audio data included in content being reproduced, to an external audio apparatus using a first audio transmission profile; changing an audio transmission profile from the first audio transmission profile to a second audio transmission profile, based on an audio-related event occurring while the stereo data is transmitted using the first audio transmission profile; and obtaining first mono audio data by selecting any one of a plurality of pieces of sound data included in the stereo data, and transmitting the first mono audio data and second mono audio data generated based on second audio data corresponding to the audio-related event, to the external audio apparatus using the second audio transmission profile.

Abstract: An audio device includes a first earbud and a second earbud, each of which is configured to establish respective first and second wireless links with an audio source, and receive, from the audio source, audio information over the respective first and second wireless links. The first earbud and the second earbud are further configured to communicate with one another over a third wireless link. At least one of the first earbud and the second earbud includes a measurement circuit configured to measure respective signal strengths of the first, second and third wireless links, a computation circuit configured to compute a difference in signal strengths of the first and second wireless links, and a determination circuit configured to determine an operating environment of the audio device based on the computed difference and further based on the signal strength of the third wireless link.

Abstract: The present disclosure provides a speaker box, including a rear housing with a cavity, an elastic fixing member fixed to the rear housing, and a sound-producing unit supported on the elastic fixing member, an orthographic projection of the sound-producing unit being located in the cavity. The sound-producing unit includes a frame, a vibration system, a magnetic circuit unit, and a front cover defining a front cavity with the vibration system. The magnetic circuit unit includes a yoke, a main magnet, and an auxiliary magnet. The front cover includes a support portion, a cover plate, and a coating portion. The coating portion extends to a periphery of the yoke and completely wraps the auxiliary magnet jointly with the yoke. The elastic fixing member, the yoke, and the coating portion jointly seal the cavity to form a rear cavity.

Abstract: A flux beam is generated as a function of flux magnitude patterns. A plurality of flux signals is detected via a sensor array comprising a plurality of sensors. A plurality of flux patterns is generated based on the plurality of flux signals, each of the plurality of flux patterns representing a respective one of the plurality of flux signals. A plurality of flux magnitude patterns is generated based on the plurality of flux patterns, each of the plurality of flux magnitude patterns representing an absolute value of a respective one of the plurality of flux patterns. A flux beam is then generated as a function of the plurality of flux magnitude patterns.

Abstract: An audio output device, a method for eliminating sound leakage, and a storage medium are provided in the disclosure. The audio output device includes a processor, a first speaker, and a second speaker. The processor is configured to generate a second audio file based on a first audio file and a parameter adjustment value. The processor is configured to control the first speaker to play the first audio file to generate a first audio and synchronously control the second speaker to play the second audio file to generate a second audio. The first audio is transmitted to an ear of a user for the user to listen, and the second audio is used to eliminate an audio leaked to an outside of the audio output device during transmission of the first audio to the ear of the user.

Abstract: A method that includes determining a set of one or more reverberation parameters of an extended reality (XR) environment in which a user is to participate, determining whether an audio source device is wirelessly communicatively coupled to send audio to an audio output device, in response to determining that the audio source device is not wirelessly communicatively coupled to the audio output device obtaining a microphone signal produced by a microphone of the audio source device, producing a reverberant audio signal from the microphone signal according to the set of one or more reverberation parameters, and sending the reverberant audio signal to drive a speaker driver of the audio source device.

Abstract: The present disclosure provides a hearing protection method capable of blocking external high-sound-pressure-level energy, including: a second sound pressure energy threshold being greater than a first sound pressure energy threshold; when an external sound energy value is greater than the first sound pressure energy threshold and is less than the second sound pressure energy threshold, enabling a preset active noise cancellation function; and when the external sound energy value is greater than the second sound pressure energy threshold, disabling the preset active noise cancellation function, and blocking high-sound-pressure-level energy by means of passive noise cancellation. The present disclosure can block the external high-sound-pressure-level energy.

Abstract: In certain aspects, a leakage compensation method and system for a headphone are disclosed. An audio reference signal is obtained responsive to an audio signal to be played by a speaker of the headphone. An audio feedback signal is obtained based on a microphone signal acquired by a microphone of the headphone responsive to the audio signal being played by the speaker. One or more compensation parameters of a compensation filter are determined based on the audio reference signal and the audio feedback signal. The compensation filter is configured using the one or more compensation parameters. A music signal is processed using the compensation filter to generate a leakage-compensated music signal to be played by the speaker.

Abstract: A baseball pitch selection communication system has a transmitter and a body-worn visual receiver. The transmitter includes a transmitter unit configured to transmit wireless signals, a first microcontroller and a plurality of user actuatable input elements. The first microcontroller is configured to provide the transmitter unit with a selection signal to wirelessly transmit in accordance with actuation of the user actuatable input elements, the selection signal corresponding to a pitch selection. The visual receiver includes a receiving unit configured to wirelessly receive the selection signal, a memory configured to contain a plurality of stored visual instructions, a display configured to display visual instructions, and a second microcontroller. The second microcontroller is configured to control the memory and the display to display a selected visual instruction in accordance with the received selection signal, where the selected visual instruction corresponds to the pitch selection.

Abstract: An audio transmission method is performed by a first electronic device, the first electronic device is connected to a second electronic device through wireless communication, and the second electronic device includes a first channel playback apparatus and a second channel playback apparatus. The audio transmission method includes: obtaining target audio, and decoding the target audio into a first channel audio signal and a second channel audio signal; and transmitting the first channel audio signal to the first channel playback apparatus through an ultra wide band transport protocol, and transmitting the second channel audio signal to the second channel playback apparatus through the ultra wide band transport protocol.

Abstract: A transducer comprises two piezoelectric layers attached to a substrate, two protective layers, two masses, and two stiffeners arranged at the ends of the bimorph. The transducer is made using a composite bagging process and autoclave curing. The transducer is attached to a flat panel using a parallelogram-shaped double-sided tape to form a loudspeaker or a display panel with haptic feedback. The improved transducer enables a full-range flat panel speaker with uniform frequency response over its operating frequency.

Abstract: Some noise compensation methods involve receiving microphone signals corresponding to ambient noise from a noise source location in or near an audio environment, determining or estimating a listener position in the audio environment and estimating at least one critical distance, which is a distance from the noise source location at which directly propagated sound pressure is equal to diffuse field sound pressure. Some examples involve estimating whether the listener position is within the at least one critical distance and implementing a noise compensation method for the ambient noise based, at least in part, on an estimate of whether the listener position is within the critical distance.

Abstract: Embodiments are provided for receiving a request to output audio at a first speaker and a second speaker of an electronic device, determining that the electronic device is oriented in a portrait orientation or a landscape orientation, identifying, based on the determined orientation, a first equalization setting for the first speaker and a second equalization setting for the second speaker, providing, for output at the first speaker, a first audio signal with the first equalization setting, and providing, for output at the second speaker, a second audio signal with the second equalization setting.

Abstract: A system for managing audio performance in a vehicle includes an audio unit having one or more speakers and one or more microphones respectively positioned in and/or around the vehicle. The speakers transmit an audio signal within the vehicle. A command unit is in communication with the audio unit. The command unit has a processor and tangible, non-transitory memory on which instructions are recorded. The command unit is adapted to receive the audio signal through the one or more microphones and determine whether at least one audio quality parameter of the audio signal meets a predefined threshold. The command unit may be adapted to take at least one remedial action when the audio quality parameter is below the predefined threshold.

Abstract: An audio amplifier includes: a buck controller configured to control an output voltage at a first supply terminal, the output voltage selected from a set including a plurality of output voltages, where the output voltage takes a settling time to settle; a first audio bridge including: a class-AB driver stage coupled to the first supply terminal, and a delay insertion circuit configured to receive a processed digital stream and provide the processed digital stream to the class-AB driver stage a delay time after receiving the processed digital stream, where the delay time is based on the settling time; and an audio amplitude detector configured to detect a first peak amplitude in the first digital audio stream, where the buck controller is configured to select a lowest output voltage from the set that is higher than the first peak amplitude plus a headroom voltage.