| 摘要 |
<p>A headphone is disclosed which can remove external noise. The noise removal headphone forms an air inlet and an air inflow controller in the headphonehousing and the inner housing. The air inlet is opened and closed to minimize changes in the low frequencyband when the attenuation sound is added to the original audio sound. The noise removal headphone opens or closes the air inlet during the output of the attenuating sound for removing noise to properly control air pressure in the headphone and thus to prevent changes in the low frequency band due to noise removal, thereby removing the external noise and faithfully outputting the original audio sound through the speaker.</p> |
