Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A tunable multichannel headphone includes at least two main housings connected by a connection portion. Each of the main housings includes a speaker disk defining independent sound chambers, a driver unit disposed in the sound chambers, a front acoustic unit and a rear acoustic unit. The front and rear acoustic units are disposed on the opposite sides of the speaker disk. The front acoustic unit has a sound effect tuning unit which has field and channel switches and an audio output unit. The rear acoustic unit has first and second timbre switches. The switches are rotatable members arranged on the speaker disk for tuning different sound effects and tones. A method for assembling the tunable multichannel headphone is also disclosed.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: A multi-directional key assembly is mounted on an electronic device to control the electronic device, and has a pressing module, a circuit board, and a housing. The pressing module has a flexible first panel, at least one dividing groove, multiple pressing portions, and multiple first contact elements. The at least one dividing groove divides the first contact elements from one another. Each pressing portion corresponds to and drives one of the first contact elements. The circuit board has multiple signal generators respectively corresponding to the first contact elements. The housing has multiple dividing protrusions protruding toward the first panel. The dividing grooves and the dividing protrusions divide the first panel into multiple sections. Thus, when one of the pressing portions is pressed, only one of the first contact elements moves. The other first contact elements do not move simultaneously.

Abstract: A tunable multichannel headphone includes at least two main housings connecting by a connection portion. Each of the main housings includes a speaker disk defining independent sound chambers, driver unit disposed in the sound chambers, front acoustic unit and the rear acoustic unit. The front and rear acoustic units are disposed on the opposite side of the speaker disk. The front acoustic unit has a sound effect tuning unit which has a field and a channel switches and an audio output unit. The rear acoustic unit has a first and a second timbre switches. The switches are rotatable members arranged on the speaker disk for tuning different sound effects and tones. A method for assembling the tunable multichannel headphone is also disclosed.