Abstract: An electronic device includes a metal back cover, a metal frame, a first antenna module and a second antenna module. The metal frame includes a first and a second disconnection portion, a first and a second connection portion. The first and the second connection portion are connected to the metal back cover. The first disconnection portion is separated from the first connection portion, the metal back cover and the second disconnection portion to form a first slot. The second disconnection portion is connected to the second connection portion and is separated from the metal back cover to form a second slot. The first antenna module is connected to the first disconnection portion, and forms a first antenna path. The second antenna module is connected to the second disconnection portion, and forms a second and a third antenna path with the second disconnection portion and the metal back cover.

Abstract: An earphone device includes a speaker unit, an inner housing body and an outer housing body. The inner housing body covers the speaker unit through an insert molding technique. The outer housing body covers the inner housing body through the insert molding technique.

Abstract: A speaker device includes a housing body, a speaker driver and a passive radiator. The housing body is formed with a first sound hole and a second sound hole respectively opening in two opposite directions. The speaker driver is disposed in the housing body, is located adjacent to the first sound hole, and is adapted to generate sound. The passive radiator is disposed in the housing body, is located adjacent to the second sound hole, and is adapted to generate sound. The first sound hole and the second sound hole are adapted for respectively allowing the sound generated by the speaker driver and the sound generated by the passive radiator to travel out from the housing body respectively in two opposite directions therethrough.

Abstract: A passive diaphragm assembly includes a counterweight member, a first diaphragm and a second diaphragm. The first diaphragm and the second diaphragm are spaced apart from each other, are connected respectively to opposite ends of the counterweight member, and cooperate with the counterweight member to define an air space thereamong.

Abstract: A speaker adapted to be disposed on a head-mounted device includes a housing member, a speaker unit, a vibrating unit and an abutting member. The housing member is adapted to be disposed on the head-mounted device and is formed with an opening adapted to open toward an ear of a user when in use. The speaker unit is disposed on the housing member in a manner that the speaker unit is not directly in contact with the head of the user when in use. The vibrating unit is disposed on the housing member and is capable of generating vibrations. The abutting member is disposed on the vibrating unit, is adapted to be in contact with the skin of the user, and is capable of transmitting the vibrations to the skull of the user.

Abstract: An earphone device includes a speaker unit, an inner housing body and an outer housing body. The inner housing body covers the speaker unit through an insert molding technique. The outer housing body covers the inner housing body through the insert molding technique.

Abstract: A speaker adapted to be disposed on a head-mounted device includes a housing member, a speaker unit, a vibrating unit and an abutting member. The housing member is adapted to be disposed on the head-mounted device and is formed with an opening adapted to open toward an ear of a user when in use. The speaker unit is disposed on the housing member in a manner that the speaker unit is not directly in contact with the head of the user when in use. The vibrating unit is disposed on the housing member and is capable of generating vibrations. The abutting member is disposed on the vibrating unit, is adapted to be in contact with the skin of the user, and is capable of transmitting the vibrations to the skull of the user.

Abstract: A passive diaphragm assembly includes a counterweight member, a first diaphragm and a second diaphragm. The first diaphragm and the second diaphragm are spaced apart from each other, are connected respectively to opposite ends of the counterweight member, and cooperate with the counterweight member to define an air space thereamong.

Abstract: A speaker device includes a housing body, a speaker driver and a passive radiator. The housing body is formed with a first sound hole and a second sound hole respectively opening in two opposite directions. The speaker driver is disposed in the housing body, is located adjacent to the first sound hole, and is adapted to generate sound. The passive radiator is disposed in the housing body, is located adjacent to the second sound hole, and is adapted to generate sound. The first sound hole and the second sound hole are adapted for respectively allowing the sound generated by the speaker driver and the sound generated by the passive radiator to travel out from the housing body respectively in two opposite directions therethrough.

Abstract: A sound recording module including a sound-collecting space, a sound wave inlet, and a sound-receiving element is provided. The sound-collecting space at least has a reflecting zone. The reflecting area is adjacent to a first sound wave gathering zone and a second sound gathering zone, respectively. The first sound wave gathering zone appears in form of a hand web and defines a sound-receiving element fixing portion in the deepest position of the first sound gathering zone. The sound wave inlet is correspondingly formed on at least part of a periphery of the second sound gathering zone. The sound-receiving element is disposed at the sound-receiving element fixing portion of the first sound gathering zone. The sound-receiving element is configured to record a sound entering the sound-collecting space.

Abstract: A mobile device and a method for operating the same are provided. The mobile device includes a sound detection unit, a signal processing unit, a sound mixing unit and a speaker. The sound detection unit detects an environment sound around the mobile device and converts the environment sound to an external sound signal. The signal processing unit analyzes the external sound signal and determines whether to enable a sound mixed mode according to an analyzed result. In the sound mixed mode, the sound mixing unit mixes a music signal with the external sound signal to generate a sound mixed signal, and the mobile device plays the sound mixed signal through the speaker.

Abstract: A directional sound recording module including a sound-receiving case, a plurality of sound inlet apertures, and a sound-receiving element is provided. The sound-receiving case encircles to form a chamber. A sound inlet opening and a fixing end are respectively formed at two opposite sides of the chamber. The sound inlet opening and the fixing end are communicated with each other. The sound inlet apertures are disposed on a surface of the sound-receiving case and corresponding to the chamber. An extending direction of the sound inlet apertures is perpendicular to the sound inlet opening of the sound-receiving case. The sound-receiving element is disposed at the fixing end of the sound-receiving case. The sound-receiving element is configured to record a sound entering the chamber from the sound inlet opening and the sound inlet apertures.

Abstract: A sound recording module including a sound-collecting space, a sound wave inlet, and a sound-receiving element is provided. The sound-collecting space at least has a reflecting zone. The reflecting area is adjacent to a first sound wave gathering zone and a second sound gathering zone, respectively. The first sound wave gathering zone appears in form of a hand web and defines a sound-receiving element fixing portion in the deepest position of the first sound gathering zone. The sound wave inlet is correspondingly formed on at least part of a periphery of the second sound gathering zone. The sound-receiving element is disposed at the sound-receiving element fixing portion of the first sound gathering zone. The sound-receiving element is configured to record a sound entering the sound-collecting space.

Abstract: A directional sound recording module including a sound-receiving case, a plurality of sound inlet apertures, and a sound-receiving element is provided. The sound-receiving case encircles to form a chamber. A sound inlet opening and a fixing end are respectively formed at two opposite sides of the chamber. The sound inlet opening and the fixing end are communicated with each other. The sound inlet apertures are disposed on a surface of the sound-receiving case and corresponding to the chamber. An extending direction of the sound inlet apertures is perpendicular to the sound inlet opening of the sound-receiving case. The sound-receiving element is disposed at the fixing end of the sound-receiving case. The sound-receiving element is configured to record a sound entering the chamber from the sound inlet opening and the sound inlet apertures.

Abstract: An audio signal processing apparatus configured to process a plurality of audio signals of a shared-volume stereo system is provided. The audio signal processing apparatus includes a plurality of signal processing channels. The signal processing channels are configured to filter the audio signals to obtain high-frequency components and low-frequency components. The signal processing channels perform a signal processing operation on the low-frequency components to generate a low-frequency modulation signal. The signal processing channels sum up the high-frequency components and the low-frequency modulation signal to reproduce a plurality of audio reproduction signals. The signal processing channels drive loudspeakers of the shared-volume stereo system according to the audio reproduction signals. Furthermore, an audio signal processing method is also provided.

Abstract: A surround of a diaphragm is provided. Its cross-section looks like a raise with an opening which opens downward. A bottom rim of the raise defines a virtual standard plane. The raise includes a compliance adjusting portion and two stress sharing portions. The compliance adjusting portion is sags and disposed centrally at the raise. The stress sharing portions sag and flank the compliance adjusting portion symmetrically. Linking portions are connected between the compliance adjusting portion and the stress sharing portions, respectively. The compliance adjusting portion and the stress sharing portions do not cross the virtual standard plane. Therefore, the compliance adjusting portion and the stress sharing portions share the stress sustained by the surround, so as to effectively reduce the variation in rigidity of the diaphragm while the diaphragm is vibrating and thus minimize harmonic distortion.

Abstract: A center positioning jig includes a base having a top surface and an annular groove wherein the top surface has central and peripheral sections separated by the annular groove, and a positioning column protruding from the central section. The center positioning jig is adapted for assembling a speaker in a way that a voice coil is combined with a positioning sheet by means of the center positioning jig and a voice coil jig or just sleeved onto the voice coil jig, a magnetic path structure is constructed of a magnet-conductive housing, a magnetic element and a magnet-conductive plate and then combined with the voice coil and a diaphragm by means of the center positioning jig, and a cap is fastened to the diaphragm. In this way, the assembly of the speaker requires relatively fewer jigs and the components of the speaker are easy to be combined coaxially.

Abstract: An external-magnet-type magnetic circuit includes an iron core and at least one composite magnet coaxially mounted around the iron core. The composite magnet has two magnetic poles with field directions thereof substantially perpendicular to each other, wherein one of the magnetic poles has the field direction thereof pointing to the iron core, and a magnetism-guiding plate being deposited on the other magnetic pole of the composite magnet and being separated from the iron core by a magnetic gap. Thereby, the composite magnet provides high magnetic flux density in relatively small volume, without the additional use of any magnetism-guiding yokes, and thus is particularly suitable for small-size amplifiers where it helps to improve acoustic sensitivity and acoustic output performance.

Abstract: A magnetic circuit for coaxial speaker includes a first magnetic unit, at least one second magnetic unit arranged around the first magnetic unit and at least one third magnetic unit arranged around the at least one second magnetic unit. The magnetic pole arrangement of the second magnetic unit is reversed to the magnetic pole arrangement of the first magnetic unit and the third magnetic unit, enabling a first magnetic loop to be established between the first magnetic unit and the at least one second magnetic unit and a second magnetic loop to be established between the at least one second magnetic unit and the at least one third magnetic unit. The magnetic circuit is practical for use in the inner and outer drivers of a coaxial speaker, providing uniform magnetic field distribution, and facilitating speaker miniaturization.

Abstract: A diaphragm surround manufacturing method includes: mixing a molten plastic and a gas in supercritical fluid state in a feed pipe of an injector to form a mixture; filling a die with the mixture thus formed and controlling pressure and temperature of the die to cause the gas to diffuse and nucleate inside the die and develop a plurality of bubbles; and reducing the temperature of the die to cause the plastic to cure and form a microcellular foam structure. Accordingly, the surround manufactured by the manufacturing method has equal foam cell diameters and uniform foam cell distribution so as to enhance the tensile strength of the surround, enable a diaphragm with the surround to perform well at low frequencies, and extend the service life of the diaphragm.