Noise shielding earset having acoustic filter

Abstract

Disclosed is a noise shielding earset having an acoustic filter. The noise shielding earset having an acoustic filter according to the present invention comprises: a driver unit for generating sound;and an acoustic filter for covering a back hole formed through the driver unit, in order to shield an external noise while allowing air to pass through the acoustic filter, wherein: the acoustic filter comprises a filter layer having a through-hole and a sound movement path selectively formed therethrough, and a plate having a through-hole formed therethrough which selectively communicates with the through-hole and the sound movement path of the filter layer; the filter layer and the plate are repeatedly laminated on each other; and the through-hole of the plate communicates with the through-hole of the filter layer or the sound movement path thereof.

Description

technical field [0001] The present invention relates to noise shielding technology. More specifically, it relates to a noise shielding earphone with a sound filter capable of maintaining the same air pressure inside and outside of the earphone and completely shielding external noise. Background technique [0002] Earphones are usually in-ear earphones (In-ear earphones), which are sound devices that are inserted into the helix and the external auditory canal to listen to sound. [0003] Also, when the earphone is inserted into the external auditory canal, a difference in air pressure occurs between the inside (human body pressure) and the outside (atmospheric pressure) of the earphone. That is, the tip of the earphone formed on the earphone is in close contact with the inner wall of the external auditory canal, and an air pressure difference between the inside and outside of the earphone occurs. [0004] However, this difference in air pressure affects the diaphragm, and a...

AI Technical Summary

Problems solved by technology

However, like the earphones mentioned above, there is also a problem that external noise is input through the sound collection hole formed for the sound collection of the microphone, and the external noise flows in through the back hole formed at the rear end of the drive unit.

On the other hand, even with an in-ear microphone (in-ear microphone) in which the microphone faces the direction of the external auditory canal, there is a problem that the sound quality is degraded by external noise regardless of the installation position of the in-ear microphone.

For this reason, when the back hole formed on the rear tail of the drive unit is closed, the above-mentioned diaphragm tilt phenomenon will occur, making it impossible to use it inside the aircraft or in high mountain areas.

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