Abstract: An earphone including a housing, a speaker, a plurality of porous materials and a tuning mechanism is provided. The housing has a containing space, a sound-output opening and a plurality of tuning holes, wherein the containing space communicates with outside of the housing through the tuning holes. Areas of the tuning holes are substantially the same. The speaker is disposed at the sound-output opening and located in the containing space. The air permeability of each porous material are different, and the porous materials cover the tuning holes correspondingly. The tuning mechanism is disposed at the housing and shields at least one of the tuning holes selectively.

Abstract: An ear tip including a tube portion and an outer-umbrella portion is provided. The tube portion has a first end and a second end opposite to the first end, so that a sound output tube of an insert-type earphone may be inserted into the tube portion from the first end of the tube portion. Besides, when the ear tip is placed into an ear canal of a user, the second end of the tube portion enters the ear canal at first. The outer-umbrella portion extends from an outer surface of the tube portion and surrounds an axial direction of the tube portion. The second end of the tube portion protrudes from a top of the outer-umbrella portion.

Abstract: An ear tip including an inner-tube portion, an outer-flange portion and a bump portion is provided. The inner-tube portion is configured to be mounted to an audio output tube of an insert-type earphone. The outer-flange portion is extended from a side of the inner-tube portion, surrounds the inner-tube portion, and has a smooth outer surface. The bump portion is disposed on the smooth outer surface, so as to maintain an air-leaking channel at periphery of the bump portion when the ear tip is inserting into a canal of a user.

Abstract: A vibrating element includes a diaphragm and a voice coil. The diaphragm has a first surface and a second surface opposite to each other, in which the first surface includes a first conductive region and a second conductive region separated from the first conductive region. The voice coil is disposed at the first surface of the diaphragm, in which two ends of the voice coil are respectively electrically connected to the first conductive region and the second conductive region, and the two ends of the voice coil are located within a region circled by the voice coil on the first surface.

Abstract: An electronic device includes a jack electrically connecting an outer speaker, a power controller, an audio generator electrically connecting the jack and the power controller, and an inner speaker. The inner speaker includes a housing, a magnet, a vibrating element, and a first electromagnetic inducting coil. The magnet and the vibrating element are configured in the housing. The vibrating element electrically connects the audio generator via the jack to be vibrated relatively to the magnet for sounding. The first electromagnetic inducting coil is configured on the vibrating element and electrically connected to the power controller to generate electricity induced by a magnetic field of the magnet. A power storage is charged by the electricity via the power controller. Through the jack and the power controller, the power storage is charged by electricity generated by a second electromagnetic inducting coil of the outer speaker.

Abstract: An electronic device includes a power controller and a power motor. The power controller is used to electrically connect a power storage device. The power motor includes a magnetic part and a coil part. The coil part has a main coil and a electromagnetic inducting coil that are electrically connected to the power controller. The main coil is used to drive a relative rotation of the magnetic part and the coil part. The electromagnetic inducting coil generates electricity which is inducted by a magnetic field of the magnetic part. The power storage device is charged by the electricity via the power controller.

Abstract: A plug is used for connecting a first speaker. The first speaker includes a first magnet, a first vibrating element, and a first electromagnetic inductor. The first vibrating element vibrates relatively to the first magnet for sounding. The first electromagnetic inductor generates electricity induced by a magnetic field of the first magnet. The plug includes a first audio terminal, a pair of first power terminals, and a ground terminal. The first audio terminal is used for electrically connecting the first vibrating element. The pair of first power terminals is used for electrically connecting the first electromagnetic inductor, so as to output the electricity generated by the first electromagnetic inductor. The ground terminal is used for connecting the first vibrating element.

Abstract: An earphone including a case, a case extension unit, a plate, a cover, a first speaker and a second speaker is provided. The first speaker is disposed on a supporting portion of the plate and is disposed on a first plane different from a second plane where the second speaker is located. A distance exits in the position of the first speaker and the position of the second speaker corresponding to a direction of the sound from the earphone to the user who wears the earphone. The distance variation can make the sound field have more special effects and have better frequency response in some frequency domain. The distance variation can also avoid the interference of different sound fields generated by the speakers inside the earphone, and thus improves the performance of the whole sound field.

Abstract: An earphone including a housing, a bracket, a first speaker unit and a second speaker unit is provided. The bracket disposed inside the housing includes a front plate, a first tube portion, a second tube portion and at least one connecting portion. The first tube portion is connected to the front plate. The second tube portion is separated from the first tube portion. The first tube portion is between the front plate and the second tube portion. The connecting portion connects the first tube portion and the second tube portion. The front plate has a central hole and surrounding holes. The second accommodating space is communicated to a main audio-output path of the housing through the surrounding holes. The first speaker unit is disposed in a first accommodating space of the first tube portion. The second speaker unit is disposed in a second accommodating space of the second tube portion.