Abstract: A speaker includes a frame, a first tuning portion, a vibration system and a magnetic circuit system. The frame has a lateral wall, a bottom wall, an accommodation space defined by the lateral wall and the bottom wall and an opening end located at a top end of the accommodation space. The first tuning portion is formed on the lateral wall of the frame. The vibration system is disposed in the accommodation space of the frame and has a vibration film vibrating along an axial direction of the frame. A rear chamber is defined by the vibration film and the bottom wall of the frame. The magnetic circuit system is disposed in the accommodation space of the frame. When the vibration film vibrates, an airflow generated in the rear chamber flows along the first tuning portion on the lateral wall and exits, so as to form a first tuning path.

Abstract: A loop antenna includes a printed circuit board (PCB), a first antenna structure and a second antenna structure. The PCB includes a first surface and a second surface relative to the first surface, and the PCB includes a clear region and a ground region, wherein the clear region is adjacent to the ground region. The first antenna structure is disposed in the clear region at the first surface. The first antenna structure includes a feed structure and a first ground end. The feed structure is coupled to a power feed end which is disposed in the ground region. The first ground end is coupled to the ground region. The second antenna structure is disposed relative to the first antenna structure at the second surface. The second antenna structure includes a second ground end. The second ground end is coupled to the ground region.

Abstract: A wireless earphone includes an earphone body with a concha contact surface. A sound outlet tube protrudes out from the concha contact surface. A convex positioning portion protrudes out from the concha contact surface. A laid slot is located on the concha contact surface and adjacent to the convex positioning portion. When the earphone body is mounted on a human ear, the concha contact surface is configured to face a concha of the human ear, the sound outlet tube is configured to insert into an auditory canal of the human ear, the convex positioning portion is configured to fit within a cavum of the human ear, and the laid slot is configured to fit within a crux helix of the human ear.

Abstract: A wireless communication module includes a first circuit board, a second circuit board, a chip antenna, an electrical connector and an electrical conductive member. The first circuit board and the second circuit board are electrically connected to each other and arranged in parallel spaced relationship. The chip antenna is located on the first circuit board. The electrical connector is located on the second circuit board and between the first and second circuit boards. The electrical conductive member extends from a metal housing of the electrical connector and has at least a radiation aid portion and a shielding portion. The electrical conductive member and the first circuit board collectively define a hollow space, wherein the electrical connector and the electrical conductive member are electrically connected to the chip antenna to serve as an electromagnetic radiation aid member for the chip antenna.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing member and a transmission member. The sensing member protrudes from a front end of the shell and has a conductor. The sensing member is electrically connected to the sensing chip by the transmission member. A material of the sensing member is different from a material of the shell.

Abstract: The invention provides an earphone and a set of earphones. The earphone includes a processing circuit and a filtering module. The processing circuit acquires a first speech signal and performs a pre-processing operation on the first speech signal to generate a second speech signal. The filtering module includes high-pass, low-pass, and band-pass filters. The processing circuit is further configured to: receive first, second, and third signals respectively from the high-pass, low-pass, and band-pass filters; perform a noise reduction operation on the second and third signals to generate a fourth signal; and perform a signal synthesis operation on the first and fourth signals to synthesize the first and fourth signals to form an output speech signal.

Abstract: A wireless earphone including a top cover, a bottom cover, two rigid circuit boards, a flexible circuit board, and an antenna is provided. The bottom cover is connected to the top cover, and an inner chamber is formed between the top cover and the bottom cover. The two rigid circuit boards are disposed at intervals in the inner chamber. The flexible circuit board has a first connection part and a second connection part. Two ends of the first connection part are coupled to the two rigid circuit boards respectively. The second connection part is attached on at least one of the two rigid circuit boards. The antenna is coupled to a corresponding rigid circuit board to radiate a radio frequency signal. A coupling capacitor is formed at a parallel overlapping area between the second connection part and the rigid circuit board.

Abstract: A speaker includes a circuit board, a peripheral wall, a diaphragm, at least one support member and at least one piezoelectric actuator. The peripheral wall is located on a surface of the circuit board. The diaphragm has an outer boundary attached to the peripheral wall. The diaphragm, the peripheral wall and the circuit board collectively form a chamber. The at least one support member protrudes from the surface of the circuit board and is located within the chamber. The at least one piezoelectric actuator is located on a top of the at least one support member and electrically driven to cause a vibration of the diaphragm under applied electrical bias.

Abstract: A speaker includes a frame, a first tuning portion, a vibration system and a magnetic circuit system. The frame has a lateral wall, a bottom wall, an accommodation space defined by the lateral wall and the bottom wall and an opening end located at a top end of the accommodation space. The first tuning portion is formed on the lateral wall of the frame. The vibration system is disposed in the accommodation space of the frame and has a vibration film vibrating along an axial direction of the frame. A rear chamber is defined by the vibration film and the bottom wall of the frame. The magnetic circuit system is disposed in the accommodation space of the frame. When the vibration film vibrates, an airflow generated in the rear chamber flows along the first tuning portion on the lateral wall and exits, so as to form a first tuning path.

Abstract: An ear cup structure including an ear cup shell, a cover, a discharge hole, a speaker, and a guide channel is provided. The ear cup shell has at least a first accommodating space and a second accommodating space spaced from each other, and the second accommodating space has a second opening. The cover covers the second opening of the second accommodating space. The discharge hole is formed between the ear cup shell and the cover. The speaker is disposed in the second accommodating space, thereby dividing the second accommodating space into a front chamber and a rear chamber. The guide channel is communicated with a peripheral side of the rear chamber and is disposed between the rear chamber and the discharge hole. An airflow produced by the speaker in the rear chamber flows through the guide channel and is discharged to an external environment from the discharge hole.

Abstract: A head phone structure includes an earmuff casing and a speaker. The earmuff casing includes a first casing and a second casing. A first accommodating space and a first chamber are formed between the first casing and the second casing, and the first chamber is formed outside the first accommodating space. The speaker is disposed in the first accommodating space of the earmuff casing and at least includes a frame and a vibration system. A second chamber is defined and formed by the frame and the vibration system. An airflow is generated in the second chamber when the vibration system vibrates. The second chamber communicates with the first chamber of the earmuff casing.

Abstract: A computer-implement voice command authentication method is provided. The method includes obtaining a sound signal stream; calculating a Signal-to-Noise Ratio (SNR) value of the sound signal stream; converting the sound signal stream into a Mel-Frequency Cepstral Coefficients (MFCC) stream; calculating a Dynamic Time Warping (DTW) distance corresponding to the MFCC stream according to the MFCC stream and one of a plurality of sample streams generated by the Gaussian Mixture Model with Universal Background Model (GMM-UBM); calculating, according to the MFCC stream and the sample streams, a Log-likelihood ratio value corresponding to the MFCC stream as a GMM-UBM score; determining whether the sound signal stream passes a voice command authentication according to the GMM-UBM score, the DTW distance and the SNR value; in response to determining that the sound signal stream passes the voice command authentication, determining that the sound signal stream is a voice stream spoken from a legal user.

Abstract: An earphone device including a main body, a speaker, a control element, a pressure sensor, and a touch sensor is provided. The speaker is disposed in the main body for dividing the main body into a front chamber and a rear chamber. The control element is disposed in the rear chamber. The pressure sensor is disposed in the front chamber, is coupled to the control element, is configured to sense a pressure change in the front chamber, and accordingly generates a pressure-sensing signal. The touch sensor is disposed in the rear chamber, is coupled to the control element, is configured to sense a first external touch applied to the main body, and accordingly generates a first trigger-sensing signal. The control element automatically controls an action of the earphone device according to the pressure-sensing signal and the first trigger-sensing signal.

Abstract: A microphone package structure includes a substrate, a metal housing, a MEMS microphone component and at least one integrated circuit component. The substrate has a first surface and a second surface that are opposite to each other. The metal housing is located on the first surface such that the substrate and the metal housing collectively define a hollow chamber. The MEMS microphone component is located on the metal housing and within the hollow chamber. The at least one integrated circuit component is located within a region of the second surface on which the metal housing has a vertical projection.

Abstract: A charging apparatus is provided. A detection circuit includes a voltage dividing path between an output terminal of a charging circuit and an output terminal of a reference voltage generating circuit. The detection circuit provides a detection signal according to a divided voltage on the voltage dividing path. A control circuit determines whether a load is connected to the charging apparatus according to the detection signal.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing sound tube and a transmission member. The sensing sound tube protrudes from a front end of the shell and has a conductor. The sensing sound tube is electrically connected to the sensing chip by the transmission member. A material of the sensing sound tube is different from a material of the shell.

Abstract: A system for transforming sensed data is provided. The system includes an inertial sensor and a processor. The inertial sensor generates first sensed data by sensing a motion or behavior of a user. The processor is communicatively connected to the inertial sensor and pre-stores a data transformation model, wherein the data transformation model converts an acceleration vector and an angular velocity vector corresponding to the first sensed data into an acceleration vector and an angular velocity vector corresponding to second sensed data, and outputs the acceleration vector and the angular velocity vector corresponding to the second sensed data to an identification model pre-stored in the processor.

Abstract: An earphone case includes a body, a storage member, a cover, and a reset member. The body has a chamber and a fixing base. The base is securely disposed in the chamber. The storage member is disposed in the chamber, located above the fixing base, contacted with the body, and has multiple first magnetic parts. The cover is pivotally connected to the storage member and the fixing base, and the cover has multiple second magnetic parts. The reset member is disposed above the fixing base and connected to the body and the storage member respectively. In close mode, the cover completely covers the storage member. The multiple first magnetic parts and second magnetic parts are magnetically attracted to each other. In open mode, the cover is relatively separated from the storage member and rotated at an angle, such that the cover partially overlaps with the storage member.

Abstract: An in-ear headphone includes a shell, a speaker, a circuit board, and a sensing structure. The shell has an accommodating space. The speaker is disposed in the accommodating space. The circuit board is disposed in the accommodating space, and the circuit board is electrically connected to the speaker. A sensing chip is disposed on the circuit board. The sensing structure includes a sensing sound tube and a transmission member. The sensing sound tube protrudes from a front end of the shell and has a conductor. The sensing sound tube is electrically connected to the sensing chip by the transmission member. A material of the sensing sound tube is different from a material of the shell.

Abstract: A hearing aid device is provided. The hearing aid device at least includes a neckband and a first microphone. The neckband is worn on a neck of a user. The neckband defines a virtual datum plane and a first virtual plane parallel to each other, wherein the virtual datum plane overlaps a coronal plane of the user when the neckband is worn by the user, and a skin portion, furthest from the virtual datum plane, of a throat of the user is located on the first virtual plane. The first virtual plane is distant from the virtual datum plane by the first distance. The first microphone is disposed on the neckband, and is distant from the virtual datum plane by the second distance, wherein the second distance is less than the first distance.