Abstract: The present application discloses a sound-output device, including a signal processing circuit, configured to generate a bone-conducted control signal and an air-conducted control signal based on an initial sound signal; a vibration speaker, configured to generate a bone-conducted sound wave based on the bone-conducted control signal; and an air-conduction speaker, configured to generate an air-conducted sound wave based on the air-conducted control signal, wherein a signal component of at least partial frequency band in the air-conducted control signal has an amplitude and a phase canceling at least partial leakage of sound generated by the vibration speaker, such that at least partial component in the air-conducted sound wave cancels the at least partial leakage of sound.

Abstract: The present disclosure relates to a display device in which a volume balance is automatically adjusted and a surround sound system. The display device includes an audio output interface, a wireless communication interface connected to at least one external speaker, and a controller configured to the audio output interface and the external speaker to output a sound, wherein the controller controls a volume of the external speaker according to a level of a sound output from the audio output interface.

Abstract: A head-mounted wearable device (HMWD) uses temples as housing for a transducer, maximizing the available space within the temples for other components, such as a battery. The exteriors of the temples act as housings so that separate transducer housings do not consume space within the temples. The temples may include openings that direct emitted sound toward the ear of a user of the HMWD. Sound generated by the transducer exits the openings and provides audio to the user's ear having a suitable volume. Each temple may include two microphones to facilitate use of a beamforming algorithm. When voice input is received, the HMWD may determine a particular set of microphones for use based on a charge level of power storage devices in each temple, a noise level associated with the microphones, or other factors.

Abstract: Methods, systems, and devices for signal processing are described. Generally, as provided for by the described techniques, a wearable device to receive an input audio signal from one or more outer microphones, an input audio signal from one or more inner microphones, and a bone conduction signal from a bone conduction sensor based on the input audio signals. The wearable device may filter the bone conduction signal based on a set of frequencies of the input audio signals, such as a low frequency portion of the input audio signals. For example, the wearable device may apply a filter to the bone conduction signal that accounts for an error in the input audio signals. The wearable device may add a gain to the filtered bone conduction signal and may equalize the filtered bone conduction signal based on the gain. The wearable device may output an audio signal to a speaker.

Abstract: An audio signal processing device includes a first input terminal which receives an audio signal from a record player, a memory which stores a correction parameter for audio signal processing and characteristic information indicating the characteristic of an audio signal for measurement, a signal processing circuit which performs the audio signal processing on the audio signal received based on the correction parameter, and a microcomputer. The microcomputer measures the sound characteristic of the audio signal received when the audio signal for measurement recorded on a phonograph record for measurement are reproduced, generates the correction parameter based on a result of comparison between the result of the measurement and the characteristic information, and stores, in the memory, setting information and the correction parameter generated, in association with each other, the setting information indicating a setting on the audio signal processing when the measurement is performed.

Abstract: An electroacoustic earcup for open-back headphones may include: a housing extending in a main direction, wherein the housing includes a first wall with a first opening and a second wall with a second opening, wherein the first and second walls are transverse to the main direction and are connected by a side wall; an air-permeable earpad whose shape mates with that of a human ear, wherein the air-permeable earpad is operably connected in fluid communication with the first opening; an air-permeable cover which is operably connected in fluid communication with the second opening; and a first electroacoustic transducer and a second electroacoustic transducer in the housing, one behind the other in the main direction. Each of the first and second electroacoustic transducers may include a diaphragm, configured to vibrate, facing the first opening. Each of the first and second electroacoustic transducers may define an input surface facing the second opening.

Abstract: An audio device including: an audio signal input section that receives an audio signal; a signal processor that performs signal processing on the audio signal; an amplifier that amplifies the audio signal; an audio signal output section that outputs the amplified audio signal; a feeder that feeds electric power to an external device; a feed detector that detects a state of feeding of the electric power by the feeder; a controller that causes the signal processor to perform level limiting processing to limit a level of the audio signal in a case where the feed detector detects that the feeder is feeding the electric power to the external device.

Abstract: A device for adapting the volume of an audio signal in an audio system includes a control unit that determines the loudness of a first audio signal of a first entertainment source or the volume setting of a controller of the audio system, and adapts the volume setting of the controller of the audio system on the basis of the loudness of the first audio signal or the volume setting of the controller, or emits a signal in order to indicate to a user a change between the loudness of the first audio signal of the first entertainment source or the volume setting of the controller of the audio system and a respective specified threshold.

Abstract: Provided in the present disclosure is a diaphragm, comprising a diaphragm body, wherein the diaphragm body comprises a fixing portion at an outer side, a bendable ring portion provided protruding from an inner ring side of the fixing portion and elastically bendable, and an inner side portion at an inner ring side of the bendable ring portion, the diaphragm body is made of a waterproof and breathable material having waterproof and breathable micropores. According to the present disclosure, the diaphragm body is made of waterproof and breathable material having waterproof and breathable micropores so that the diaphragm body has micropores, and the sizes of the micropores are between the size of water molecules and the size of air molecules, such that air molecules can smoothly pass through the diaphragm, while the water molecules can be effectively prevented from passing therethrough.

Abstract: A system for determining the impulse response of an environment, the system comprising an audio emitting unit operable to emit a predetermined sound in the environment, an audio detection unit operable to record the sound output by the audio emitting unit, and an impulse response generation unit operable to identify an impulse response of the environment in dependence upon a frequency response of the audio emitting unit and/or the audio detection unit, and a difference between the predetermined sound and the recorded sound.

Abstract: One embodiment of the present invention sets forth a technique for generating audio for a speaker system. The technique includes receiving an audio input signal, a first location associated with the audio input signal, a first geometric model of the speaker system, and a second geometric model of one or more surfaces in proximity to the speaker system. The technique also includes generating a plurality of output signals for a plurality of speaker drivers in the speaker system based on the audio input signal, the first location, and the first and second geometric models. The technique further includes transmitting the plurality of output signals to the plurality of speaker drivers, wherein the plurality of speaker drivers emit audio that corresponds to the plurality of output signals, the emitted audio rendering a sound corresponding to the audio input signal at the first location.

Abstract: A base speaker system for use with a turntable that eliminates feedback playback while playing vinyl records is described. The base speaker system for use with the turntable prevents feedback, resonance, or other audio-disruptive noise that typically occurs when a turntable is placed near to a speaker system. Moreover, the base speaker system may be a standalone model that receives a turntable thereon or may be configured as a cabinet assembly for a built-in setup.

Abstract: Provided is an electrostatic clutch. The electrostatic clutch includes: multiple arrays of HIN electrodes, a respective pass-through channel being formed between any two arrays of the multiple arrays of HIN electrodes; and multiple arrays of biased electrodes, each array of the multiple arrays of biased electrodes moving back and forth in the respective pass-through channel such that electrostatic force is generated between the multiple arrays of biased electrodes and the multiple arrays of HIN electrodes. Such configuration allows microphone performance over a wide range of atmospheric pressures which is likely expected by applications. This is achieved electrostatically in a purely passive way having advantages over other designs which require complex electronics and active control. Physically decoupling the membrane and sense structure simplifies design of the sense structure as only small AC perturbations of the rotor is considered with no DC changes in rotor position.

Abstract: Various implementations include audio processing system having artificial intelligence (AI) acoustic feedback suppression. In some particular aspects, an audio processing system includes: an input adapted to receive an acoustic signal via a microphone; an electroacoustic transducer; an amplifier configured to amplify the acoustic signal and output an amplified signal via the electroacoustic transducer; and an artificial intelligence (AI) system having a machine learning model that processes the acoustic signal prior to amplification to produce a dynamic filter, wherein the AI system applies the dynamic filter to the acoustic signal to suppress feedback in the amplified signal.

Abstract: The present disclosure discloses an acoustic output device. The acoustic output device may include a speaker assembly, configured to convert audio signals into vibration signals; a functional assembly electrically connected to the speaker assembly; and a supporting structure, configured to be connected to the speaker assembly and the functional assembly, wherein the supporting structure includes a metal body therein, and the metal body may be electrically connected to the functional assembly.

Abstract: A noise cancelling soundbar system that may include one or more noise cancelling soundbars integrated with additional noise cancelling soundbars and slave devices. The soundbar system may be mounted or integrated into a wall, a headboard, or other furniture. The system may be in communication with external microphones and may be controlled using a control interface, such as a remote control.

Abstract: An electronic device comprising a circuitry configured to perform (402; 602; 902; 1002) blind source separation (201) based on a received input signal (1) to obtain separated sources; to perform (403; 605; 906; 1005) time-domain filtering (202) on at least one of the separated sources to obtain at least one filtered separated source; and to perform (404; 606; 907; 1006) remixing or upmixing (203) based on the at least one filtered separated source.

Abstract: An acoustic device is described and includes an acoustic sensor element configured to sense acoustic energy and produce an output signal and a threshold detector circuit including a switch having an input coupled to the output of the acoustic sensor element to receive the output signal, a control port that receives a control signal, and first and second output ports, a first channel including an analog-to-digital converter that operates at a first power level a second analog-to-digital converter that operates at a second higher power level, relative to the first power level and a threshold level detector that receives an output from the first analog-to-digital converter to produce the control signal having a first state that causes the switch feed the output signal from the acoustic sensor element to the second analog-to-digital converter when the first digitized output signal meets a threshold criteria.

Abstract: Techniques for cleaning and calibrating a microphone are discussed herein. For example, a computing device can implement a microphone component to operate a speaker adjacent to a microphone to cause removal of an obstruction (e.g., rain, mud, dirt, dust, snow, ice, animal droppings, etc.) on or near the microphone. The microphone component can also or instead cause the speaker to output a frequency for testing operation of the microphone. By implementing the cleaning and/or calibrating techniques described herein, foreign particle(s) of varying size and type can be dislodged from an area near the microphone to improve performance of the microphone.

Abstract: Provided herein are novel methods for providing an enhanced audio signal adapter. The invention provides an in-line audio adapter that digitally enhances bi-directional radio communication for dismounted and mounted operators. The adapter may be customizable to the hearing ability of the radio user, and compatible with both standard military audio connectors and commercial audio connectors enhancing the operator's in-field capabilities to process, record, share, replay, and operate radio communications.