| 摘要 |
The present invention relates to an audio input and output device, Provided is an audio input and output device which comprises a connection part inserted into an ear jack terminal of a terminal, and including multiple sound signal output terminals, a grounding terminal, and a sound signal input terminal for relaying a signal generated in the terminal with the audio input and output device; and an active noise control part recognizing noise generated around the audio device, and generating an offset sound of the noise, wherein the active noise control part receives power needed to drive from the terminal, while receiving through anyone of the multiple sound signal output terminals or the sound signal input terminal to drive an active noise control function. According to the present invention, use of the active noise control function does not need additional battery and charging means for the audio input and output device to be simply carried, and reduces weight of such a battery, so that inconvenience of wearing is minimized, and does not need a space for storing an additional battery inside, thereby having an effect of reducing size of the audio input and output device. |
