Abstract: A method for analyzing environmental sounds to identify repeating noises due to power equipment for purposes of controlling noise pollution is disclosed. Ambient sounds are sampled with microphones and the resulting data analyzed by an edge computing device. The samples are compared to stored data with a convolutional neural network by the edge computing device which also performs pitch shifting and cycle shifting to reduce false negatives. Positive results are reported via LoRa and/or 4G to a cloud platform and/or backend server.

Abstract: The audio playing method is provided by embodiments of the present disclosure, applied to on-board audio system (including multiple speaker modules arranged at different positions in a car cabin, the audio playing method includes: obtaining an audio signal to be played; decomposing the audio signal to obtain multiple audio source signals of different categories, where each of the multiple sound source signals includes multiple sub sound source signals of a same category; establishing a route between all sub sound source signals and the multiple speaker modules according to a preset distribution principle indicating rules for playing different sub sound source signals by different speaker modules; and playing each of the multiple sub sound source signals by a corresponding speaker module according to the route. The present disclosure provides more accurate and immersive car multi-channel surround sound playback, which can effectively improve overall acoustic experience of the on-board audio system.

Abstract: A method of reducing signals associated with one or more classes of unwanted noise is disclosed which includes choosing one or more classes as noise to be cancelled while allowing the remainder of classes amongst a plurality of classes to pass through, dividing an incoming time-varying signal into a plurality of snippets having a single or a plurality of durations, transforming each snippet into an associated frequency spectrum, thus generating a plurality of spectra, for each spectrum of the plurality of spectra, identifying presence of the one or more classes chosen as noise, for each identified class of noise, multiplying a 180° phase-shifted version of a frequency signal associated with the identified class of noise by a frequency spectrum of the incoming signal, thereby generating an associated frequency-domain noise-cancelled spectrum, inverse transforming the frequency-domain noise-cancelled spectrum into a time-varying noise-cancelled signal, and outputting the time-varying noise-cancelled signal.

Abstract: The present invention relates to a wireless communication device for a neck microphone, comprising: a body 110, which has a communication terminal device and is placed on the rear part of the neck of a user; and a neck microphone 120, which is attachably/detachably provided on the body to come into close contact with the front part of the neck, and thus transmit voice sound through the vibration of the neck, wherein the center of gravity is at the back of the neck of the user because of the weight of the body. The present invention is manufactured in an integrated form of a neck microphone and a wireless communication terminal device, and thus enables communication while both hands are free even if fire is suppressed while the facepiece respirator is worn, or even if chemical protective clothing is worn.

Abstract: The present disclosure provides a sounding device. The sounding device includes a vibration system, a magnetic circuit system, a conductive element and a fixed element. The vibration system includes a diaphragm and a voice coil fixed to the diaphragm. The sounding device further includes a reinforcement element having a first reinforcement part fixed to the upper surface of the connection part or the lower surface of the connection part, a second reinforcement part fixed to the outer side surface of the voice coil, and a third reinforcement part fixed with the upper surface of the voice coil. Compared with the related art, the sounding device provided by the present disclosure has a simple structure and good reliability.

Abstract: An audio apparatus includes a network interface, a receiver, at least one storage, and at least one processor. The processor is configured to determine that the audio apparatus is in a state capable of communicating with the other audio apparatus via the network interface. The processor is also configured to receive audio data via the receiver transmitted from an external apparatus different from the other audio apparatus. The processor is also configured to output a sound based on the received audio data. The processor is also configured to transmit the sound emission control information stored in the at least one storage to the other audio apparatus. The sound emission control information includes one or more of a sound volume, and a frequency band.

Abstract: A hearing device includes a) a multitude of input transducers providing a corresponding multitude of electric input signals; and b) a processor for providing a processed signal in dependence of the electric input signals. The processor includes b1) a beamformer for providing a spatially filtered signal in dependence of electric input signals and beamformer filter coefficients determined in dependence of a fixed steering vector including as elements respective acoustic transfer functions from a target signal source, to each of said multitude of input transducers; and b2) a target adaptation module connected to the input transducers and to at least one beamformer, the target adaptation module being configured to provide compensation signals to compensate the electric input signals so that they match the fixed steering vector.

Abstract: Methods and apparatus assist listeners in distinguishing between electronically generated binaural sound and physical environment sound while the listener wears a wearable electronic device that provides the binaural sound to the listener. The wearable electronic device generates a visual alert or audio alert when the electronically generated binaural sound occurs.

Abstract: Techniques for performing spatial audio processing based on a listening mode of a wearable device are described. An example technique includes detecting a listening mode that is activated on the wearable device. A set of spatial audio processing settings is determined based on the listening mode. The set of spatial audio processing settings is applied to a spatial audio rendering algorithm while audio content is output from the wearable device. Another example technique includes detecting a listening mode of the wearable device that has been activated for listening to audio content. A head-tracking mode of the wearable device is controlled based on the listening mode.

Abstract: Embodiments are provided for satellite volume control. An example method includes receiving an input at a playback device to adjust a volume for a plurality of playback devices that are grouped for synchronous playback of audio content, wherein the plurality of playback devices includes the playback device. The method also includes sending a first message over a network from the playback device to a device associated with the plurality of playback devices, the first message including information based on the input, wherein the information is used to adjust the volume of the plurality of playback devices. The method also includes receiving a second message at the playback device over the network, the second message including information for the volume of the playback device, wherein the volume is based on the adjusted volume of the plurality of playback devices.

Abstract: Voice coil actuators and loudspeakers containing same. The voice coil actuators include moving voice coil assemblies that have multiple segments. Each segment of a moving voice coil assembly is separately controlled by an amplifier, one channel of an amplifier, and combinations thereof utilized in combination with a position sensor that senses the position of the moving voice coil assembly. By this arrangement, the voice coil actuators produce a linear force per unit current throughout the range of motion while obtaining the benefits and advantages associated with both over-hung and under-hung voice coil actuator designs.

Abstract: An earphone device is provided and includes: a wireless or wired transceiver module configured to receive a first electrical signal from an electronic device via a wireless or wired transmission network; a first compensation module connected to the wireless or wired transceiver module and arranged in a streaming audio gain compensating filter of an active noise cancellation chip, where the first compensation module is used to implement a frequency response curve to calculate a frequency response of the first electrical signal in each frequency band, and to generate a first filter parameter of a target frequency response curve via a first compensation gain conversion model, so that the first filter parameter gain compensates the first electrical signal in each of the frequencies; and a first transducer connected to the first compensation module to convert the first electrical signal gain compensating into sound and then transmit the sound.

Abstract: A system for facilitating stress-adaptive virtual experience station includes a virtual display system and camera system coupled to a kinematic rig. An array of transducers coupled to the station interact with a user based on a feedback signal, configured for user health treatments, audio effects, or computational imaging techniques.

Abstract: A device for controlling vibrations generated by electric machines of a vehicle is provided. The vehicle includes a first electric machine unit for driving a first wheel and a second electric machine unit for driving a second wheel. The device is configured to operate the first electric machine unit depending on a first torque to be applied to the first wheel and to operate the second electric machine unit depending on a second torque to be applied to the second wheel. Furthermore, the device is configured to operate the first electric machine unit and the second electric machine unit in a manner coordinated to one another such that predefined target vibrations can be generated as a result of the superimposition of first vibrations caused by the operation of the first electric machine unit and second vibrations caused by the operation of the second electric machine unit.

Abstract: An electronic device includes: an outer case, at least a portion of the outer case being configured to maintain a positional relationship between the electronic device and a wearer's ear; a first sound generator and a second sound generator both provided inside the outer case; and a controller configured to control the first sound generator and the second sound generator to output sounds.

Abstract: A plurality of microphone signals of a microphone array may be obtained. An environment change may be detected based on the microphone signals. In response, a reverberation time environment may be determined. The reverberation may be used to modify a playback audio signal.

Abstract: The disclosure provides an approach for adaptive sound scene rotation. A method of adaptively rendering audio is provided. The method includes obtaining an audio signal. The audio signal is associated with one or more audio channels and each audio channel is associated with a position of an audio source with respect to a reference point within a local reproduction system. The method includes determining a rotation of a user with respect to a reference orientation about the reference position within the local reproduction system and determining a system rotation based on the rotation of the user. The method includes rendering the audio signal to one or more loudspeakers of a plurality of loudspeakers within the local reproduction system, based on the system rotation, a number of the plurality of loudspeakers, and the plurality of positions of the plurality of loudspeakers, to compensate for the rotation of the user.

Abstract: The embodiments of the present disclosure disclose an earphone with antenna peripherals and an audio playback method. A specific implementation of the earphone with antenna peripherals comprises a sound cavity assembly, a battery assembly, and an antenna ear handle, wherein the sound cavity assembly includes a front sound cavity and a rear sound cavity, an earphone motherboard and a speaker are arranged between the front sound cavity and the rear sound cavity, the front sound cavity is provided with a sound outlet; the battery assembly includes a front battery cavity and a rear battery cavity, the front battery cavity and the rear battery cavity are connected, and a battery is arranged between the front battery cavity and the rear battery cavity; the sound cavity assembly and the battery assembly are connected through the antenna ear handle, and the earphone motherboard and the battery are connected through a power cord.

Abstract: Methods and systems are provided for engine sound synthesis. In one example, a method may include generating a vehicle sound at a modified pitch for a range of engine speeds by selecting intermediate segments of a sample sound and applying synchronous pitch overlapping added from the sample sound. The sound samples may be engine sounds recorded at specific RPM and the pitch modified based on a desired RPM.

Abstract: An electronic device is provided. The electronic device includes a communication module, an input module, a first output module, a second output module, a first digital to analog converter (DAC) connected to the first output module, a second DAC connected to the second output module, and at least one processor, wherein the at least one processor may be configured to identify an operation mode of the electronic device, obtain an external signal through the communication module, or obtain an input signal through the input module, generate an output signal corresponding to the operation mode, and control the first DAC and the second DAC in response to the operation mode.