Abstract: A speakerphone includes a processor, a memory device, a power management unit, a first microphone to receive audio waves, a second microphone to receive audio waves, and a third microphone to receive audio waves. The speakerphone may also include a digital signal processor (DSP) to detect a single-user mode activated at the speakerphone, process the audio waves received by the first microphone, second microphone, and third microphone to determine the wave phases of the audio waves received by the first microphone, second microphone, and third microphone, calculate a direction of a voice of a single user relative to the speakerphone; and process the voice of the single user and filter other voices detected by the first microphone, second microphone, and third microphone from the user's voice.

Abstract: An earphone, including a sound production component; an ear-hook configured to place the sound production component near an ear canal without blocking an opening of the ear canal, at least a portion of the sound production component extends into a concha cavity; and a microphone assembly including a first microphone and a second microphone disposed in the sound production component or the ear hook, the sound production component or the ear hook includes a first sound hole and a second sound hole corresponding to the first microphone and the second microphone, respectively; wherein a projection of the first sound hole on a sagittal plane and a projection of the second sound hole on the sagittal plane have a first distance, a ratio of the first distance to a size of a projection of the sound production component on the sagittal plane along a major axis direction is 0.7-1.2.

Abstract: An integrated optical transducer for measuring displacement of a diaphragm comprises the diaphragm, a lens element and a substrate body having a waveguide structure and a coupling element. The diaphragm is arranged distant from the substrate body and substantially parallel to a main extension plane of the substrate body. The waveguide structure is configured to guide light from a light source to the coupling element and from the coupling element to a photodetector. The coupling element is configured to couple at least part of the light in the waveguide structure onto a light path between the coupling element and the diaphragm and to couple light reflected by a surface of the diaphragm from the light path into the waveguide structure. The lens element is arranged on the light path such that light on the light path passes through the lens element.

Abstract: Disclosed is an open earphone, comprising a sound production component and an ear hook. The ear hook may include a first portion and a second portion connected in sequence. The first portion may be hung between the auricle of a user and the head of the user, the second portion may extend toward a front outer side of the auricle and connect the sound production component, and the sound production component may be located close to the ear canal but not block the opening of the ear canal; wherein the sound production component and the auricle may have a first projection and a second projection on a sagittal plane, respectively, a centroid of the first projection may have a first distance from a highest point of the second projection in a vertical axis direction, a ratio of the first distance to a height of the second projection in the vertical axis direction may be within a range of 0.25-0.

Abstract: A method for frequency tuning a set of plates of a watch. The plates are disposed one above the other forming a watch dial with a space defined between the plates. A mechanical shock to the set of plates is generated, and the vibration frequency of each plate is checked. The vibration frequency of at least one of the plates is matched if different from the other plate so as to obtain an identical vibration frequency for each plate in order to tune the plates at least according to the first vibration eigenmode so as to avoid any contact between the plates as a result of any mechanical shock.

Abstract: A method for operating a bone conduction communication system can include establishing a communicable connection, operating a transducer in an input mode wherein the bone conduction transducers are configured to detect a vibration associated with a bone of the user; transmitting an audio signal over the communicable connection; and operating the transducers responsive to the audio signal.

Abstract: Described herein is an earphone including an ear hook portion and an earphone portion, the ear hook portion is provided with a first magnetic attraction member, the earphone portion is provided with a second magnetic attraction member, and the second magnetic attraction member attracts and cooperates with the first magnetic attraction member to connect the earphone portion with the ear hook portion; a heart rate detection module, the heart rate detection module is arranged on the ear hook portion and/or earphone portion.

Abstract: A headset and/or a hearing protection device comprises a waterproof speaker assembly. The waterproof speaker assembly comprises a speaker unit, a waterproof speaker housing, and a waterproof pressure equalization element. The speaker unit includes a transducer configured to generate an audio frequency signal. The waterproof speaker housing is configured to receive and sealably enclose, in part or in full, the speaker unit in an interior or a cavity of the waterproof speaker housing. The waterproof pressure equalization element is permeable to air. The waterproof speaker housing is configured to receive and/or support the waterproof pressure equalization element. The waterproof pressure equalization element is configured to equalize surrounding or ambient pressure changes from the interior or cavity of the waterproof speaker housing.

Abstract: In an example, a speaker device may include a first transducer and a second transducer. The first transducer may include a first diaphragm, a first magnetic circuit, and a first voice coil disposed in a magnetic gap of the first magnetic circuit to cause vibration of the first diaphragm. The second transducer may include a second diaphragm, a second magnet circuit, and a second voice coil disposed in a magnetic gap of the second magnetic circuit to cause vibration of the second diaphragm. Further, the speaker device may include a magnetic plate having a first surface coupled to the first transducer and a second surface coupled to the second transducer. The first surface is opposite to the second surface.

Abstract: Disclosed herein are systems and methods for audio synchronization for hearing devices. An audio packet is received from a host device at a first hearing device configured to be worn in a first ear of a wearer, the audio packet compatible with a wireless low energy digital communication protocol, and the audio packet is received from the host device at a second hearing device configured to be worn in a second ear of the wearer. Upon one or more programmable conditions, a synchronization packet is sent from the first hearing device to the second hearing device. An acknowledgment packet is sent from the second hearing device to the first hearing device upon receipt of the synchronization packet, and a first transducer at the first hearing device and a second transducer at the second hearing device are unmuted to deliver synchronized audio to the first ear and to the second ear.

Abstract: The present invention provides a coaxial speaker, including a frame, a magnetic circuit system, and coaxially arranged first sounding unit and second sounding unit. The magnetic circuit system includes a magnetic bowl and a magnet part. The magnet part includes a first magnet part and a second magnet part, and the first magnet part is arranged with a first channel. The second magnet part is arranged with a second channel. The support component encloses the third channel connected to the through hole of the first diaphragm, and the first channel, the second channel and the third channel are connected to form the sound channel of the second sounding unit. The sound from the second sounding unit is emitted from the through hole of the first diaphragm through the sound channel. The coaxial speaker of the present invention has a good treble effect.

Abstract: A loudspeaker includes a diaphragm having a front surface facing in a forward direction for producing sound to be radiated outwardly from the loudspeaker in the forward direction and a back surface facing in a backward direction that is opposite to the forward direction; a magnet unit configured to provide magnetic field in a magnetic gap. The magnetic gap is located between a first portion of the magnet unit located radially inwards of the magnetic gap with respect to a longitudinal axis of the loudspeaker and a second portion of the magnet unit located radially outwards of the magnetic gap with respect to the longitudinal axis of the loudspeaker. A voice coil is configured to sit in the magnetic gap when the diaphragm is in a rest position.

Abstract: An earpiece includes a housing, a sound transmission component, a sound reception component, a force application structure and a trigger. A cavity is formed in the housing. The sound transmission component is provided in the cavity. The sound reception component is provided on the housing, and can move along a predetermined path. At least a retracted position and a stretched position are arranged on the predetermined path. The force application structure is connected to the sound reception component, and configured to drive the sound reception component to move to the retracted position or the stretched position. The earpiece in the present disclosure stretches out or retracts the sound reception component automatically. The earpiece in the present disclosure does not need the user to stretch out or retract the sound reception component manually, with good user experience.

Abstract: The present disclosure discloses an acoustic output device. The acoustic output device may include at least one acoustic driver configured to generate sounds and a housing structure configured to carry the at least one acoustic driver. The housing structure may include a cavity, and the at least one acoustic driver may be arranged in the cavity and may divide the cavity into a first cavity and a second cavity. And the sounds generated by the at least one acoustic driver may be transmitted from the first cavity and the second cavity, respectively, pass through the housing structure, and form dual sound sources arranged on two sides of an auricle, respectively.

Abstract: An electronic device and an operating method of the electronic device are provided. The electronic device includes an audio outputter; a rollable display; a communicator configured to receive a tagging input from an external device, when the electronic device is in a low-power mode state, and obtain information about content to be received from the external device according to the tagging input; and a processor configured to control output of the content received from the external device when the processor is woken up by the communicator, wherein the processor is further configured to determine, based on the information about the content, a content output mode indicating a degree to which the rollable display is to be withdrawn, and control at least one of the rollable display or the audio outputter to output the content received from the external device, according to the content output mode.

Abstract: The present disclosure relates to an earphone including a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of a projection of the ear hook on the user's sagittal plane includes a first curve that has an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component. The extremum point is located behind a projection point of an upper vertex of the ear hook on the user's sagittal plane, and the upper vertex of the ear hook is the highest point of an inner contour of the ear hook along a vertical axis of the user.

Abstract: The systems and methods described relate to the concept that smart devices can be used to 1) sense various types of phenomena like sound, blue light exposure, RF and microwave radiation, and 2) in real-time analyze, report and/or control outputs (e.g., displays or speakers). The systems are configurable and use standard computing devices, such as wearable electronics, tablet computers, and mobile phones to measure various frequency bands across multiple points, allowing a single user to visualize and/or adjust environmental conditions.

Abstract: Apparatus and method provided herein are directed to a linear differential directional microphone array (LDDMA), which takes into account the directionality of the array elements. The LDDMA may be designed by generating a steering vector for a linear array (LA) having preselected parameters including parameters ?, p, ?, N, and M, generating a constraint matrix based on the steering vector, reformulating the constraint matrix based on a microphone response matrix and a steering matrix, obtaining a beamformer by applying a minimum norm solution in terms of the constraint matrix, verifying a desired characteristic of the LA by calculating the beamformer for a desired direction, and constructing the LA based on the preselected parameters and the beamformer.

Abstract: Aspects of the subject technology relate to inductive acoustic filters for acoustic devices. An inductive filter may include a substrate, an etched serpentine channel in a surface of the substrate and extending within the substrate from a first port in the substrate to a second port in the substrate. The inductive filter may also include a polymer cover layer adhesively attached to the surface of the substrate over the etched serpentine channel. The inductive filter may be positioned over an opening in a substrate of an acoustic module, such as a microphone module or a speaker module.

Abstract: A method of acoustic echo suppression using a recurrent neural network, performed by at least one processor, is provided. The method includes receiving a microphone signal and a far-end reference signal, estimating an echo suppressed signal and an echo signal based on the microphone signal and the far-end reference signal, estimating enhancement filters for the microphone signal based on the echo suppressed signal and the echo signal, generating an enhanced signal based on the enhancement filters, and adjusting the enhanced signal using automatic gain control (AGC) and outputting the adjusted signal.