Noise reduction earphone

A technology for noise-canceling earphones and earphone bodies, which is applied in earpiece/earphone accessories, internal auditory earphones, and earphones to reduce environmental noise. problems, to achieve excellent noise reduction performance, eliminate discomfort, and strong adaptability

Pending Publication Date: 2021-12-24
GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Completely sealed in-ear noise-cancelling headphones have excellent and stable noise-cancelling performance because the earplugs are completely sealed with the human ear canal, but it completely isolates the human ear from the outside world, which will cause hearing discomfort and pressure; semi-open There is an acoustic leakage in the ear part of the in-ear noise-canceling earphone, which is comfortable and natural for the human ear to wear, but the noise-cancelling performance has declined, and because of the different physiological structures of each person's ear, there will be different leakage states, so that its noise-cancelling effect varies from person to person. Different, can not reflect its noise reduction performance stably

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In the first embodiment, the noise reduction earphones adopt digital noise reduction earphones, and the active noise reduction processing module of the earphones includes a first controller electrically connected to the valve 2, and the first controller is used to control the opening and closing of the valve 2, because the valve 2 The open and closed states correspond to different noise reduction filter parameters, and the first controller is also used to switch different noise reduction filter parameters according to the opening and closing of the valve 2 .

[0059] When the valve 2 is opened, the noise reduction earphone is a semi-open in-ear noise reduction earphone, the first controller switches to the first noise reduction filter parameter, processes the signals of the reference microphone 116 and the error microphone 115, and outputs them to the speaker 114; when the valve 2 is closed, the noise reduction earphone is a completely sealed in-ear noise reduction earph...

Embodiment 2

[0061] In the second embodiment, the noise-cancelling earphones adopt analog noise-cancelling earphones, and the active noise-cancelling processing module of the earphones includes a second controller, a sealed filter bank, and an open filter bank. The filter bank and the open filter bank are connected, and the second controller is used to control the opening and closing of the valve 2 and control one of the sealed filter bank and the open filter bank to be in a working state according to the opening and closing of the valve 2 .

[0062] Specifically, the sealed filter bank includes a sealed feedforward filter 3 and a sealed feedback filter 4 that are both connected to the second controller; the open filter bank includes a semi-open forward filter that is both connected to the second controller. Feedback filter 5 and semi-open feedback filter 6.

[0063] When the valve 2 is closed, the second controller controls the sealed feed-forward filter 3 and the sealed feedback filter 4...

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Abstract

The invention provides a noise reduction earphone, and relates to the technical field of earphones. The noise reduction earphone provided by the invention comprises an earphone body, an environment sound guiding channel and a valve, wherein the environment sound guiding channel is located in the earphone body, a first end of the environment sound guiding channel communicates with the outside, and the second end of the environment sound guiding channel is used for communicating with an ear canal; and the valve is arranged in the environment sound guiding channel and used for controlling a conduction state of the environment sound guiding channel. The noise reduction earphone provided by the invention can be easily switched between a full in-ear mode and a half in-ear mode, the earphone does not need to be modified and disassembled in an operation process, requirements of different people in different environments are met, and the earphone is more comfortable to wear and has higher adaptability.

Description

technical field [0001] The invention relates to the technical field of earphones, in particular to a noise reduction earphone. Background technique [0002] Existing in-ear noise-cancelling earphones are divided into completely sealed in-ear noise-cancelling earphones and semi-open in-ear noise-cancelling earphones. Completely sealed in-ear noise-cancelling headphones have excellent and stable noise-cancelling performance because the earplugs are completely sealed with the human ear canal, but it completely isolates the human ear from the outside world, which will cause hearing discomfort and pressure; semi-open There is an acoustic leakage in the ear part of the in-ear noise-canceling earphone, which is comfortable and natural for the human ear to wear, but the noise-cancelling performance has declined, and because of the different physiological structures of each person's ear, there will be different leakage states, so that its noise-cancelling effect varies from person to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10G10K11/178
CPCH04R1/1016H04R1/1083G10K11/17853
Inventor 不公告发明人
Owner GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD
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