Abstract: An earphone, an earphone control method and an earphone control device are provided. The earphone control method and the earphone control device are applied to an earphone arranged with an ultrasonic transceiver and an ultrasonic receiver.

Abstract: A method of audio device performance testing generates virtual audio device data packages.

Abstract: The present disclosure relates to the field of audio coding, in particular, it relates to a method for encoding audio signals through a masking model based on a hearing threshold of frequency intervals of the audio signal and a measured energy of the audio signal for the corresponding frequency intervals. The disclosure further relates to an encoder that is capable of carrying out the audio encoding method.

Abstract: Methods and systems for advanced stereo processing of an audio signal are disclosed. The methods and systems include selecting a coding mode of either transform coding or linear predictive coding and performing advanced stereo processing when in the selected coding mode. Both encoding and decoding operations are provided.

Abstract: Methods and systems for advanced stereo processing of an audio signal are disclosed. The methods and systems include selecting a coding mode of either transform coding or linear predictive coding and performing advanced stereo processing when in the selected coding mode. Both encoding and decoding operations are provided.

Abstract: Methods and systems for advanced stereo processing of an audio signal are disclosed. The methods and systems include selecting a coding mode of either transform coding or linear predictive coding and performing advanced stereo processing when in the selected coding mode. Both encoding and decoding operations are provided.

Abstract: A filtering method includes: receiving a first audio signal and a second audio signal that include sound emitted from a same sound source at different volumes; generating a filter signal by convoluting adaptive filter coefficients into the second audio signal; removing components of the filter signal from the first audio signal; and limiting a gain of the adaptive filter coefficients to 1.0 or less.

Abstract: The invention relates to grid (100) comprising at least one luminaire (101a-d), wherein at least one luminaire (101a-d) comprises one or more acoustic sensors (105), and preferably other sensors (103, 107); wherein the grid further comprises a controller (109) supplied with the output signals of said sensors (103, 105, 107), wherein the controller (109) is arranged for discriminating different sound categories in the output signals, including human voice sound, and to issue a sensor information signal (130) representing at least the sound category.

Abstract: This invention provides a new and improved voice communication system with high quality noise cancellation method and devices to overcome the limitations and difficulties encountered in conventional technologies. This invention discloses a noise cancellation apparatus that includes a vibration sensor and a microphone for receiving and transmitting voice signals as incoming speeches. The vibration sensor is applied to receive vibration signals corresponding to the voice signals for applying the vibration signals as reference signals for removing noise signals generated from environmental noises by converting vibration signals to intermediate PDL representation together with the speaker characteristics, mapping them into full band high quality clean acoustic representation, and synthesizing clear personal speech with characteristics identical to the original microphone speech without noises.

Abstract: Adaptive occlusion cancellation is performed in an ear-wearable device using an adaptive filter. An adaptive gain of the adaptive filter is used to determine a leakage path estimate between an external source and an eardrum of the user through the ear-wearable device. The leakage path estimate is used to update an adaptive hear-through filter of the ear-wearable device. The updated adaptive hear-through filter is used for hear-through processing in the ear-wearable device.

Abstract: The present disclosure provides a noise reduction device. The noise reduction device may include a noise receiving component, a noise reduction component, a processing component, and a housing. The noise receiving component may be configured to receive acoustic noise information of a scanning environment where a medical device is located. The processing component may be configured to control the noise reduction component to generate sound information matching the acoustic noise information received by the noise receiving component. The housing may be configured to support the noise receiving component and the noise reduction component.

Abstract: Systems, devices, and methods are described for mitigating or eliminating distortion patterns (such as those caused by one or more high-volume audio sources) in a display system such as a laser projection system. Frequency components of an incoming sound that correspond to one or more resonant frequencies of an optical reflector of the display system are determined to exceed a defined volume threshold. Responsive to that determination, a magnitude and phase of one or more harmonic motions of the optical reflector are measured. Sound waves are generated to destructively interfere with at least one frequency component corresponding to the resonant frequencies of the optical reflector.

Abstract: Methods and systems for advanced stereo processing of an audio signal are disclosed. The methods and systems include selecting a coding mode of either transform coding or linear predictive coding and performing advanced stereo processing when in the selected coding mode. Both encoding and decoding operations are provided.

Abstract: An audio analyzer configured to obtain spectral domain representations of two or more input audio signals. Additionally the audio analyzer is configured to obtain directional information associated with spectral bands of the spectral domain representations and to obtain loudness information associated with different directions as an analysis result. Contributions to the loudness information are determined in dependence on the directional information.

Abstract: An apparatus and a method for controlling a vehicle sound are provided. The apparatus a detection device that detects driving information and drive mode setting information and a processing device electrically connected with the detection device. The processing device determines an emotional state of a driver based on at least one of the driving information or the drive mode setting information, determines a sound concept depending on the emotional state of the driver, and controls a vehicle sound depending on the sound concept.

Abstract: The present application relates to a method and a circuit for dynamic range control based on peak level and RMS level double-level detection. The method includes: processing an input signal by an equalizer, to obtain an equalized signal; detecting a signal peak level and a signal RMS level of the equalized signal, to obtain the signal peak level and the signal RMS level; adjusting a parameter configuration of a dynamic range controller according to the signal peak level and the signal RMS level; adjusting a dynamic gain of the dynamic range controller according to the parameter configuration, and adjusting the equalized signal by using the adjusted gain, and then outputting the adjusted equalized signal. The method can not only control the dynamic range of the signal but also improve the clipping distortion of the signal.

Abstract: Embodiments included herein generally relate to using non-audio data embedded in an audio signal. More particularly, embodiments relate to using non-audio data embedded into the audio signal to control an audio configuration of a plurality of speakers and/or to measure a delay of a playback device.

Abstract: An audio circuit includes: a first Type-C port, a first microphone input module, and a second microphone input module; the first Type-C port includes a first pin and a second pin, the first microphone input module is connected to the first pin, and the second microphone input module is connected to the second pin; in a case that the first Type-C port and a second Type-C port of the earpiece are in a first plugging state, the first pin is connected to a third pin of the second Type-C port, and the second pin is connected to a fourth pin of the second Type-C port; and in a case that the first Type-C port and the second Type-C port are in a second plugging state, the second pin is connected to the third pin, and the first pin is connected to the fourth pin.

Abstract: Disclosed are a method for controlling a sound box, a sound box and a non-transitory computer readable storage medium. The method is applied to the sound box in a sound box system. The sound box system includes at least two sound boxes, each sound box includes at least two first sensors, the at least two first sensors are provided on opposite sides of the sound box, each first sensor is configured to transmit and receive preset signals, and the method includes following operations: obtaining, by the sound box, a connection status with other sound boxes; when the sound box is wirelessly connected to the other sound boxes, obtaining first sensing data detected by a first sensor; determining target channel information according to the first sensing data; and outputting audio according to the target channel information.

Abstract: An apparatus, method and computer program is described including: determining one of a plurality of audio modes for presentation of first audio to a user based on a location and/or movement of the user within a virtual scene, wherein the first audio includes a plurality of audio tracks located at different locations within the virtual scene; and rendering the first audio to the user in the determined audio mode, wherein: in a first audio mode of the plurality of audio modes, the locations of the audio tracks within the virtual scene are fixed and in a second audio mode of the plurality of audio modes, the locations of the audio tracks within the virtual scene move with the user.