Abstract: An headphone system (100) with improved sound reproduction capability is disclosed. The system includes a housing (101); a receiver configured with the housing (101) and to receive audio signals from one or more computing devices; a control circuitry (108) configured with the housing (101). A frequency of each of the received audio signals is determined by extracting audio attributes from the received audio signals. Then the determined frequency of each of the received audio signals is compared with a predefined threshold. In response to the comparison, the received audio signals are segregated into at least two set of signals including a first set of audio signals and a second set of audio signals. The first set of audio signals is converted into a first set of vibration signal energy and a second set of audio signals is converted into a second set of vibration signal.

Abstract: Aspects include approaches for feedback instability control in wearable audio devices. In certain cases, a method of controlling feedback instability in a wearable audio device with an active noise reduction (ANR) system includes: determining a current feedback instability by combining outputs from multiple instability detectors, applying latch logic to the current feedback instability to determine a current mitigation value, and adjusting a driver command signal based on the current mitigation value to mitigate feedback instability.

Abstract: Embodiments of this application disclose a noise cancellation apparatus and method. The noise cancellation apparatus includes a main control unit and a noise cancellation processing circuit. The main control unit determines a noise cancellation parameter based on a noise cancellation level index or a feature value for determining a matching degree between a headset and an ear canal of a user. The noise cancellation processing unit obtains an inverse phase noise of an ambient noise based on the noise cancellation parameter. After the inverse phase noise is mixed with a played downlink audio signal, the ambient noise can be canceled. In addition, because the noise cancellation parameter is determined from a preset noise cancellation parameter library based on the received or autonomously determined noise cancellation level index, instead of being uniformly configured, a noise cancellation level can be flexibly adjusted, thereby improving a noise cancellation effect and user experience.

Abstract: A computer-implemented method for controlling one or more components of a water utility system, the water utility system comprising at least one pump assembly, the method comprising: receiving a user indication indicative of a user-perceived acoustic-noise induced discomfort experienced at least at a first location, measuring at least a first sound signal at said first location, determining, based on the measured first sound signal and based on at least one of a received user indication of a degree of the user-perceived acoustic-noise induced discomfort and a received first operational parameter of the pump assembly, the first operational parameter being representative of an operational condition of the pump assembly at the time of said measuring the first sound signal, one or more adjusted control parameters of the water utility system, and controlling the water utility system based on the determined adjusted control parameters.

Abstract: The present application provides a sounding device. The sounding device includes a front surface with a sound outlet hole; a back surface; a sounding component and an outer casing. The outer casing is covered outside the sounding component. A cavity is formed between the outer casing and the end of the sounding component close to the back side. A sound guiding channel is arranged in the outer casing. One end of the sound guiding channel is communicated with the sound outlet hole, and the other end of the sound guiding channel is communicated with the cavity. The sounding device of the present application provides a smooth transmission channel for the sound from the back side by arranging the sound guiding channel in the outer casing, thereby strengthening the frontal sound of the sounding device and greatly improving the loudness of the sounding device.

Abstract: Aspects of the subject technology provide for generation of a self-voice signal by an electronic device that is operating in an active noise cancellation mode. In this way, during a phone call, a video conference, or while listening to audio content, a user of the electronic device may benefit from active cancellation of ambient noise while still being able to hear their own voice when they speak. In various implementations described herein, the concurrent self-voice and automatic noise cancellation features are facilitated by accelerometer-based control of sidetone and/or active noise cancellation operations.

Abstract: For example, a controller of an Active Acoustic Control (AAC) system may be configured to process input information, the input information including AAC configuration information corresponding to a configuration of AAC in a sound control zone; a plurality of noise inputs representing acoustic noise at a plurality of noise sensing locations; and a plurality of residual-noise inputs representing acoustic residual-noise at a plurality of residual-noise sensing locations within the sound control zone. For example, the controller may determine a sound control pattern to control sound within the sound control zone based on the AAC configuration information, the plurality of noise inputs, and the plurality of residual-noise inputs. For example, the controller may output the sound control pattern to a plurality of acoustic transducers.

Abstract: A system for reducing unwanted audible effects can include any or all of: a tactile stimulation device; a set of audio input devices; a set of filters and/or barriers; a set of audio output devices; a computing and/or processing subsystem; a set of algorithms and/or models; an extended reality subsystem; and/or any other components. A method for reducing unwanted audible effects includes any or all of: collecting information from each user of a set of users at a set of audio input devices; processing the audio information; and transmitting the processed audio information to any or all of the set of users.

Abstract: In an example, a computing device includes a microphone array and a processor. The processor may transmit an audio stream of a presentation to an online conference. Further, the processor may receive audio data via the microphone array while the audio stream is being transmitted. In response to determining the audio data is coming from a presenter of the presentation, the processor may perform a fade audio operation to control an audio level of the audio stream.

Abstract: A system comprises an ear-worn electronic device configured to be worn by a wearer. The ear-worn electronic device comprises a processor and memory coupled to the processor. The memory is configured to store an annoying sound dictionary representative of a plurality of annoying sounds pre-identified by the wearer. A microphone is coupled to the processor and configured to monitor an acoustic environment of the wearer. A speaker or a receiver is coupled to the processor. The processor is configured to identify different background noises present in the acoustic environment, determine which of the background noises correspond to one or more of the plurality of annoying sounds, and attenuate the one or more annoying sounds in an output signal provided to the speaker or receiver.

Abstract: An electric powered work machine according to one aspect of the present disclosure includes a first and a second digital filters, a control sound source, an error sensor, and a characteristics adjustor. The first digital filter includes a series of taps and generates a control signal. The control sound source produces an artificial noise in accordance with the control signal. The error sensor converts a synthesized sound of the artificial noise and a target noise at a canceling location to an error signal. The second digital filter includes N taps and generates a filtered reference signal. The characteristics adjustor uses the error signal and the filtered reference signal to adjust a coefficient of each tap of M taps in the series of taps. Each of M and N is a positive integer satisfying M<N.

Abstract: Disclosed is a method and a hearing device for audio transmission. The hearing device is configured to be worn by a user. The hearing device comprises a first earphone comprising a first speaker. The hearing device comprises a second earphone comprising a second speaker. The hearing device comprises a virtual sound processing unit connected to the first earphone and the second earphone. The virtual sound processing unit is configured for receiving and processing an audio sound signal for generating a virtual audio sound signal. The virtual audio sound signal is forwarded to the first and second speakers, where the virtual audio sound appears to the user as audio sound coming from two virtual speakers in front of the user. The hearing device further comprises a first primary microphone for capturing surrounding sounds to provide a first surrounding sound signal based on a first primary input signal from the first primary microphone.

Abstract: A binaural sound reproduction system, and methods of using the binaural sound reproduction system to dynamically re-center a frame of reference for a virtual sound source, are described. The binaural sound reproduction system may include a reference device, e.g., a mobile device, having a reference sensor to provide reference orientation data corresponding to a direction of the reference device, and a head-mounted device, e.g., headphones, having a device sensor to provide device orientation data corresponding to a direction of the head-mounted device. The system may use the reference orientation data to determine whether the head-mounted device is being used in a static or dynamic use case, and may adjust an audio output to render the virtual sound source in an adjusted source direction based on the determined use case. Other embodiments are also described and claimed.

Abstract: Embodiments and methods perform ear cavity frequency response (EFCR) adaptive noise cancelation (ANC) with path-compensation over an entire main path to the eardrum (MPED) of a user. A number of ANC filter models are pre-trained to include respective anti-noise path (ANP) filter models and respective MPED filter models representing ANC filter configurations. As a user wears a headphone earpiece, characteristics of the wearer and the position/orientation of wearing manifest a wearer/wearing condition. Techniques described herein can continuously or periodically and efficiently determine which of the pre-trained ANC filter models most closely described the present MPED of the present wearer/wearing condition, and can continuously or periodically update the ANC filter configuration based on the pre-trained models to maintain high-performance ANC that includes EFCR path-compensation.

Abstract: Techniques for improving microphone noise suppression are provided. As wind noise may disproportionately impact a subset of microphones, a method for processing audio data using two adaptive reference algorithm (ARA) paths in parallel is provided. For example, first ARA processing performs noise cancellation using all microphones, while second ARA processing performs noise cancellation using only a portion of the microphones. As the first ARA processing and the second ARA processing are performed in parallel, beam merging can be performed using beams from the first ARA, the second ARA, and/or a combination of each. In addition, beam merging can be performed using beam sections instead of individual beams to further improve performance and reduce attenuation to speech.

Abstract: A reference microphone for detecting noise is located under a first duct. The noise is in the form of a first plane wave in the first duct. A speaker is located on a top of the first duct. Connected to an upper part of the first duct is a second duct including an error microphone. The first plane wave in the first duct passes through an acoustic path and reaches the second duct. The error microphone detects the sound, and the speaker outputs a second plane wave with an opposite phase for canceling the first plane wave.

Abstract: An audio processing apparatus includes an attachment unit for a lens including a noise source, a first microphone for ambient sound, a second microphone for sound occurring from the noise source, a first conversion unit for Fourier transform of an audio signal output from the first microphone to generate a first audio signal, a second conversion unit for Fourier transform of an audio signal output from the second microphone to generate a second audio signal, a generation unit which generates noise data using the second audio signal and a parameter concerned with noise of the noise source, a subtraction unit which subtracts the noise data from the first audio signal, and a third conversion unit which performs inverse Fourier transform of an audio signal output from the subtraction unit. The generation unit uses, as the parameter, a parameter associated with a type of the lens attached to the attachment unit.

Abstract: The present invention relates to an active noise cancellation integrated circuit for stacking multiple anti-noise signals, an associated method, and an active noise cancellation headphone using the same. The method is applicable to an audio playback device with multiple ANC filtering units. The method includes: acquiring an anti-noise signal from an ANC filtering unit; generating a decoupled signal by processing the anti-noise signal with the transfer function of a physical channel and operations of other ANC filtering units; performing a signal superposition, wherein an anti-noise signal from another ANC filtering unit is superposed with the decoupled signal; and performing an audio playback based on the superposed signal and an audio signal such that noise is eliminated.

Abstract: Active noise cancellation systems, components, and methods are provided with single-source forward cancellation using a direction-dependent filter response.

Abstract: Managing noise during an online conference session includes obtaining audio data from an endpoint participating in an online conference session. The audio data is derived from audio captured at the endpoint that includes musical sounds. The audio data is processed to identify a portion of the audio data in which a decibel level of the musical sounds is stable for a period of time. Non-musical noise present, if any, in the audio data with the musical sounds is identified and the non-musical noise is attenuated from the audio data to generate noise-reduced musical audio data. The noise-reduced musical audio data is transmitted for play out at one or more other endpoints participating in the online conference session.

Abstract: A method of distributing sound in a sporting venue, comprising: determining an event based on a position of at least one player and/or sporting projectile within the sporting venue; selecting a sound effect based on the determined event; and sending the sound effect to at least one speaker located in the sporting venue.

Abstract: An integrated circuit may include an output for providing an output signal to a transducer including both a source audio signal for playback to a listener and an anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the transducer, an error microphone input for receiving an error microphone signal indicative of the output of the transducer and the ambient audio sounds at the transducer, and a processing circuit.

Abstract: A method, comprising: obtaining one or more accelerometer signals derived from an accelerometer; and determining one or more parameters of wind at the accelerometer based on the one or more accelerometer signals.

Abstract: An information processing device (100) including a control unit that causes, on a basis of vibration output characteristics of a vibration device (200), the vibration device (200) to output a vibration corresponding to sound data.

Abstract: An active noise control device controls a speaker so as to output a canceling sound for canceling noise transmitted from a vibration source. The active noise control device includes a control signal generating unit configured to perform signal processing on a basic signal corresponding to a predetermined frequency by a feedback filter and a extraction filter, which is an adaptive notch filter, to generate a control signal that control the speaker, a secondary path filter updating unit configured to update sequentially and adaptively a secondary path filter, and a feedback filter setting unit configured to set the feedback filter based on the secondary path filter.

Abstract: Examples of system for ambient aversive sound detection, identification and management are described. The system comprises an earpiece device with a microphone configured to capture ambient sound around a user and sample it into small segments of the ambient sound, a speaker and a regulator to regulate the ambient sound segment transmitted to the speaker. The system further comprises a processing unit that identifies aversive ambient sound signals in the captured sound segment and provide recommendation action to manage the aversive sound signal by removing, supressing, attenuating or masking the aversive signals.

Abstract: Methods for providing a customized audio experience to a user of an audio output device are provided. A user interface is provided on a user device communicatively coupled to the audio output device, the user interface capable of accepting user input for managing the audio experience for the user. A set of activities is provided via the user interface, wherein each activity in the set invokes a set of behaviors configured for the activity for providing the customized audio experience to the user, wherein each behavior in the set customizes the audio experience for the user. A capability is provided via the user interface for the user to launch an activity from the set for invoking the set of behaviors configured for the activity to receive the customized audio experience.

Abstract: Described are system, apparatus, article of manufacture, method, or computer program product embodiments for controlling streaming of media content. An embodiment operates by halting a presentation of future content from a buffer upon determining that the buffer is exhausted of content to present. The embodiment includes receiving one or more packets over a network connection, the one or more packets including media information corresponding to a first portion of streaming media content, in which the first portion corresponds to a second portion of the streaming media content. The one or more packets in a buffer are stored as buffered content. Responsive to determining that the network connection is not experiencing a burst condition, the buffer is trimmed. Then, presentation of buffered content is resumed and the first portion is caused to be presented in sync with the second portion.

Abstract: Aspects of the subject technology relate to electronic devices having sensors such as pressure sensors. A pressure sensor may be integrated into an audio component of an electronic device such that the pressure sensor is fluidly coupled to an environment external to a device housing via at least a portion of an internal cavity of the audio component housing. The audio component housing may include an opening. The pressure sensor may be mounted adjacent to or within the opening. The opening may be sealed to prevent passage of gas or liquid through the opening. The pressure sensor may be integrally formed with an inner wall of the audio component housing. The audio component may be a speaker or a microphone.

Abstract: A headset, comprising: first and second ear cups, and a power and signal connector that extends between the ear cups, wherein each ear cup comprises a housing having a mounting structure for mounting the ear cup on a wearable support; a speaker; and a speaker drive circuit for operating the speaker. The first ear cup further comprises: an external power and signal connector; and a mounting structure having a first profile for mounting a removable control module having a corresponding first profile on the first ear cup such that corresponding power and signal connectors can engage the external power and signal connector so that the removable control module can provide operating signals to the speaker drive circuits.

Abstract: Techniques for presence-detection devices to detect movement of a person in an environment by emitting ultrasonic signals using a loudspeaker that is concurrently outputting audible sound. To detect movement by the person, the devices characterize the change in the frequency, or the Doppler shift, of the reflections of the ultrasonic signals off the person caused by the movement of the person. However, when a loudspeaker plays audible sound while emitting the ultrasonic signal, audio signals generated by microphones of the devices include distortions caused by the loudspeaker. These distortions can be interpreted by the presence-detection devices as indicating movement of a person when there is no movement, or as indicating lack of movement when a user is moving. The techniques include processing audio signals to remove distortions to more accurately identify changes in the frequency of the reflections of the ultrasonic signals caused by the movement of the person.

Abstract: Provided is non-contact power transmission/reception technique which is easy to be used while ensuring consideration for safety. A non-contact power transmission device 100 that wirelessly transfers generated transmission power to a non-contact power reception device 200 comprises a transmission power generation unit 120 configured to perform generation of the transmission power and a control unit 117 configured to control the generation of the transmission power. The control unit 117 is further configured to control the generation of the transmission power which is performed by the transmission power generation unit 120 in accordance with a surrounding environment in which at least one of the non-contact power transmission device 100 and the non-contact power reception device 200, or at least one of states of these devices.

Abstract: According to one embodiment, an electronic device includes a power-supply voltage input terminal, a first capacitor, and a second capacitor. The first capacitor has a fixed capacitance. The second capacitor has a variable capacitance. The first capacitor and the second capacitor are connected in parallel to the power-supply voltage input terminal.

Abstract: A vehicle for blocking a virtual engine sound that is introduced into the vehicle includes: a speed sensor configured to detect a travelling speed of the vehicle; a virtual engine sound system (VESS) including a first speaker and a second speaker; and a controller configured to control the VESS based on the travelling speed, wherein the controller is configured to: upon the vehicle being in a stopped state, control the VESS such that the first speaker outputs a virtual engine sound and the second speaker outputs a sound having an inverse phase of the virtual engine sound.

Abstract: An example device includes an imaging portion, an audio portion and at least one acoustic isolation feature. The audio portion is integrally coupled to the imaging portion. The audio portion is to provide an audio output. The at least one acoustic isolation feature is to facilitate acoustic separation of the imaging portion and the audio portion.

Abstract: A hearing aid system comprises a hearing aid, and a portable auxiliary device' adapted to establish a communication link between them. The hearing aid comprises a microphone providing an electric input signal, a signal processor, and an output unit. The auxiliary device comprises a microphone providing an auxiliary electric input signal, and a user control interface allowing a user to initiate a specific calibration mode of operation of the hearing aid system. The signal processor of the hearing aid is configured to receive corresponding time segments of said electric input signal and said auxiliary electric input signal to provide an estimate of an acoustic transfer function from said microphone of said auxiliary device to said microphone of said hearing aid. A method of operating a hearing aid system is further disclosed. The invention may e.g. be used in various applications related to own voice detection and estimation.

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include a processing circuit to implement an adaptive filter having a response that generates an anti-noise signal to reduce the presence of the ambient audio sounds at an error microphone, implement a coefficient control block that shapes the response of the adaptive filter in conformity with the error microphone signal by computing coefficients that determine the response of the adaptive filter to minimize the ambient audio sounds at the error microphone, and responsive to detecting a condition that triggers a reset of the adaptive filter, increment the coefficients in a plurality of steps from initial values of the coefficients at a time of triggering the reset to final values of the coefficients at a conclusion of the reset.

Abstract: A control apparatus and method for noise cancellation in a physical area. The control apparatus receives a trigger input which includes information about a first physical area and further controls an image capturing device to capture at least one first image of the first physical area based on the received trigger input. The control apparatus further determines a number of occupants of a first set of occupants present in the first physical area and scene information corresponding to the first physical area based on the captured at least one first image. The control apparatus further controls a movement of a first plurality of unmanned aerial vehicles (UAVs) in a physical three-dimensional (3D) space to create a virtual noise cancellation boundary around the first physical area based on the determined number of occupants of the first set of occupants and the scene information.

Abstract: A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite/depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation/depression may be realized when the actuators are driven by a common source signal.

Abstract: An ear cup housing has several reference microphones, an error microphone and a speaker. A processor drives the speaker for acoustic noise cancellation and transparency, by processing the microphone signals, and performs an oversight process by adjusting the reference microphone signals in response to detecting wind noise events and scratch events. In another aspect, the ear cup housing has an outside face that is joined to an inside face by a perimeter and the reference microphones are on the perimeter. Other aspects are also described and claimed.

Abstract: System and methods for selectively amplifying audio signals are disclosed. In one implementation, a method includes receiving at least one image of a plurality of images captured by a wearable camera; receiving a first audio signal representative of the sounds captured by a microphone; determining a looking direction of a user; and processing the first audio signal by amplifying audio coming from the looking direction of the user and attenuating audio coming from at least one other direction; receiving a second audio signal representative of the sounds captured by a hearing interface device; transmitting the second audio signal to a speaker associated with the hearing interface device; transmitting an additional audio signal to the speaker, wherein the transmission of the additional audio signal at least partially overlaps the transmission of the second audio signal; and transmitting the processed first audio signal to the speaker.

Abstract: A system comprises an ear-worn electronic device configured to be worn by a wearer. The ear-worn electronic device comprises a processor and memory coupled to the processor. The memory is configured to store an annoying sound dictionary representative of a plurality of annoying sounds pre-identified by the wearer. A microphone is coupled to the processor and configured to monitor an acoustic environment of the wearer. A speaker or a receiver is coupled to the processor. The processor is configured to identify different background noises present in the acoustic environment, determine which of the background noises correspond to one or more of the plurality of annoying sounds, and attenuate the one or more annoying sounds in an output signal provided to the speaker or receiver.

Abstract: A detection device and a method for audio direction orientation and an audio processing system are provided. The device includes a first filter, which performs a first infinite impulse response operation on each first audio beam to generate second audio beams; an absolute value operator which performs an absolute value operation on amplitude of each second audio beam to generate third audio beams; a second filter which performs a second infinite impulse response operation on each third audio beam to smooth each third audio beam to generate fourth audio beams; and a DOA processor which divides the fourth audio beams into audio beam groups, and selects a selected audio beam from each audio beam group according to energy of each fourth audio beam in each audio beam group to output beam information corresponding to the selected audio beams and used in a speech recognition and for determining a voice direction.

Abstract: A modular head-wearable loudspeaker system includes a headphones module and an earphones module, including a principal earphone. The principal earphone includes an earphone loudspeaker, an audio signal processor, an earphone wireless interface, an earphone audio output, and an earphone microphone input. The headphones module includes two earcups interconnected by a flexible headband and comprising respective headphone loudspeakers, a headphone microphone, a mechanical earphone attachment interface detachably attached to the principal earphone, a headphone audio input communicatively connected to the headphone loudspeakers and detachably communicatively connected to the earphone audio output, and a headphone microphone output communicatively connected to the headphone microphone and detachably communicatively connected to the earphone microphone input.

Abstract: An active device for attenuating the acoustic emissions of an aircraft turbojet engine includes circulation conduits for a pressurized air flow rate supplying rotary elements each having a pulsation system for the delivered air. The rotary elements are controlled in amplitude and phase and deliver, to outlet diffusers, a pulsed air flow rate with a pulsation at the frequency of the noise to be attenuated having an amplitude and a phase adjusted according to a local feedback law with microphones to attenuate the radiated acoustic power.

Abstract: One or more computer processors generate a plurality of adversarial perturbations associated with a model, wherein the plurality of adversarial perturbations comprises a universal perturbation and one or more per-sample perturbations. The one or more computer processors identify a plurality of neuron activations associated with the model and the plurality of generated adversarial perturbations. The one or more computer processors maximize the identified plurality of neuron activations. The one or more computer processors determine the model is a Trojan model by leveraging one or more similarities associated with the maximized neuron activations and the generated adversarial perturbations.

Abstract: A noise management system for a window includes an active noise control (ANC) module and a passive sound absorbing module. The ANC module is disposed in or adjacent a ventilation channel of the window and configured to substantially cancel low-frequency noise entering the ventilation channel. The passive sound absorbing module is disposed in or adjacent to the ventilation channel and configured to absorb both high-frequency noise entering the channel and harmonic sounds generated by the ANC module.

Abstract: An internal microphone signal of a headphone is filtered by i) a first filter G that, as part of an acoustic noise cancellation, ANC, subsystem, produces an anti-noise audio signal, and ii) a second filter C to produce a feedback audio signal. An estimate of a transfer function of a path S is determined, wherein the path S is from i) an input of a speaker of the headphone to ii) the internal microphone signal. The second filter C is adapted based on the estimate of the transfer function of the path S drives an input of a speaker of the headphone. Other embodiments are also described.

Abstract: A headphone includes an electro-acoustic transducer, a housing, a noise cancelling circuit, a resonant frequency converter, and a switch. The electro-acoustic transducer is configured to reproduce sound from electrical signals. The housing is attached to the electro-acoustic transducer. The noise cancelling circuit is configured to attenuate a noise sound by adding an antiphase sound to the noise sound. The resonant frequency converter is configured to change a resonant frequency of a Helmholtz resonator configured to include a cavity in the housing and a tubular cavity communicating with the cavity. The switch is configured to perform alteration of the resonant frequency and switching of the noise cancelling circuit, in conjunction with each other.

Abstract: An active vibratory noise reduction system includes: a first estimation signal generation section configured to generate a vibratory noise estimation signal by processing standard cosine and sine wave signals with correction filters corresponding to signal transfer characteristics from a vibratory noise source to an error signal detector; a second estimation signal generation section configured to generate a canceling vibratory noise estimation signal from the standard cosine and sine wave signals by using first and second adaptive notch control filters; a virtual error signal generation section configured to generate a virtual error signal from the vibratory noise estimation signal and the canceling vibratory noise estimation signal; and a filter coefficient updating section configured to sequentially update filter coefficients of the first and second adaptive notch control filters based on first and second reference signals and the virtual error signal such that the first virtual error signal is minimized.