Abstract: Provided is an earset. The earset includes an internal microphone provided inside an earphone worn on a user's ear, and configured to receive a first sound transferred from the user's mouth through an external auditory meatus via an Eustachian tube and convert the first sound into a first sound signal, at least one external microphone provided outside the earphone, and configured to receive a second sound provided from the user's mouth and convert the second sound into a second sound signal, and a controller configured to filter a noise of the second sound signal based on the first sound signal, remove the noise, and generate a third sound signal.

Abstract: Disclosed is an earset.

Abstract: Disclosed are an earset that may correct a frequency band of a voice coming from a user's ears into a frequency band of a voice coming from the user's mouth, and a control method for the same. According to an embodiment, the control method for the earset including a first earphone unit that is inserted into ears of a user while including a first microphone and a first speaker, and a main body in which a second microphone is disposed, the control method includes: determining whether a voice correction function is activated; and correcting a frequency band of a voice input to the first microphone into a frequency band of a voice input to the second microphone, when the voice correction function is activated.

Abstract: Disclosed is a voltage control device including a voltage detector detecting an output voltage output from an output port of a mobile communication device; and a voltage control circuit bypassing the output voltage to an earpiece in which a speaker and a microphone are integrally formed when the output voltage detected by the voltage detector is between a first voltage and a second voltage higher than the first voltage.

Abstract: Disclosed is an ear microphone which includes: a microphone for converting a voice signal provided from the external auditory meatus of a user to an electric signal; a speaker for converting the electric signal provided from an external device to the voice signal; and a soundproof member having a microphone receiving groove for fixing and supporting the microphone to the inside of the housing and a speaker receiving groove for fixing and supporting the speaker to the inside of the housing.

Abstract: Disclosed is an earset. The earset includes a case that forms an appearance thereof, an ear pad that is mounted in one end portion of the case and is attached to/detached from a user's ear, and a soundproof housing that is accommodated in the case and in which a speaker and a microphone are arranged in a forward/backward direction along an axial line of the ear pad.

Abstract: Disclosed is an ear microphone which includes: a microphone for converting a voice signal provided from the external auditory meatus of a user to an electric signal; a speaker for converting the electric signal provided from an external device to the voice signal; and a soundproof member having a microphone receiving groove for fixing and supporting the microphone to the inside of the housing and a speaker receiving groove for fixing and supporting the speaker to the inside of the housing.

Abstract: Each of a mobile communication terminal (100) and a headset (200) in the present invention measures the distance to another wirelessly connected device and determines whether the other device is lost. According to the present invention, the mobile communication terminal (100) in a headset system having a loss prevention function comprises: a first communication module (110) for forming a communication channel with the headset (200); a first breakaway analyzing unit (120) analyzes whether the headset (200) breaks away at a standard distance loss from a location of the mobile communication terminal (100) by analyzing a sensitivity signal delivered via the first communication module (110); and a first breakaway warning unit (140) for warning a user of a breakaway by using at least one of a vibration signal, a sound signal, or an image signal when analysis reveals that the headset (200) has broken away at the standard distance loss from the first breakaway analyzing unit (120).