Headset to provide noise reduction

Abstract

A headset to provide noise reduction may include a first microphone that is disposed outside the headset and detects external noise, a first blocking unit configured to block the external noise entering an inside of the headset, a second blocking unit configured to block external noise which is not blocked by the first blocking unit, a second microphone configured to detect internal noise of the headset including noise which is not blocked by the first blocking unit and the second blocking unit, and a speaker configured to output canceling noise to cancel the internal noise detected by the second microphone, wherein the second blocking unit surrounds the second microphone and comprises a one-way sound transmitting passage.

Description

technical field [0001] The present disclosure relates to a headphone, and more particularly, to a headphone for providing noise reduction capable of effectively blocking external noise to protect hearing by using an active noise control method and a passive noise control method. earphone. Background technique [0002] Imaging equipment is increasing in importance in modern medicine-related fields. Hospitals utilize equipment such as X-rays, computed tomography (CT), and magnetic resonance imaging (MRI) to diagnose and treat patients' diseases more quickly and accurately. Various laboratories utilize equipment such as f-MRI to provide studies of the structure and function of the brain. Since MRI has little influence on the human body and can obtain accurate images, it has become a trend to use MRI more and more among these various imaging devices. However, there is a problem that too much noise is generated using MRI in the process of obtaining an image of an affected part...

AI Technical Summary

Problems solved by technology

However, there is a problem that too much noise is generated using MRI in the process of obtaining an image of an affected part of a patient

However, sound field control through an external speaker or a method of sending sound generated by an external speaker to the inside of the headset through a tube (used as a conventional active control method) causes sound field interference and signal delay, thereby failing to provide practical noise control performance

Also, since the microphone is located at a distance from the ear, so that the actual noise inside the ear cannot be controlled, there is a limit to the amount of noise that will be canceled when high frequency noise cannot be canceled

[0005] In addition, although a speaker and a microphone of a headset are used, the positions of the speaker and the microphone are different according to each user who puts on the headset or each time the user puts on the headset, so that the distance between the speaker and the ear is different. The transmission path and the transmission path between the microphone and the ear are unstable

Therefore, the overall noise reduction result is minimized

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