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Noise reduction microphone

A microphone and noise reduction technology, applied in the direction of sensors, transducer acoustic response prevention, electrical components, etc., can solve problems such as poor noise and affecting transmission effects

Inactive Publication Date: 2018-03-06
常州叶晗电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing headset microphones generally have the disadvantage of poor filtering of ambient noise. When the surrounding environment is noisy, the headset microphone will pick up and transmit the surrounding low-frequency noise, so that the voice received by the other party will also be accompanied by low-frequency noise. Affect the transmission effect

Method used

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Embodiment Construction

[0010] See figure 1 , 2 , 3, the present invention includes an upper shell 1, a lower shell 2, a PCB board 3, the PCB board 3 is arranged on the lower shell 2, an acoustic filter 4 is provided at the front end of the upper shell 1 and the lower shell 2, and the acoustic filter 4 includes a Filter housing 41, a microphone 42 installed in the filter housing 41 for generating acoustic signals, the filter housing 41 is provided with at least one acoustic hole 43, the filter housing 41 is provided with at least one acoustic introduction channel 44, the acoustic introduction channel 44 and The acoustic hole 43 communicates; an electronic filter is also provided in the electrical signal conversion circuit of the PCB board 3, and the electronic filter is composed of triodes Q1 and Q2. The acoustic filter 4 can limit the range in which the microphone picks up voice signals, and the electronic filter can filter out the low-frequency noise picked up by the microphone, so that the microp...

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Abstract

The present invention relates to the technical field of communication devices, in particular to a noise reduction microphone, which includes an upper shell, a lower shell, and a PCB board. The PCB board is arranged on the lower shell. A filter housing, a microphone installed in the filter housing for generating acoustic signals, the filter housing is provided with at least one acoustic hole, at least one acoustic introduction channel is provided in the filter housing, and the acoustic introduction channel communicates with the acoustic hole; on the PCB board Also be provided with electronic filter in the electrical signal conversion circuit of the present invention, after the voice collection of the present invention is filtered through acoustic filter and electronic filter, acoustic filter can limit the scope that microphone picks up voice signal, and electronic filter can filter out the range that microphone picks up. Low-frequency noise allows the microphone to transmit voice clearly even in noisy environments.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a noise reduction microphone. Background technique [0002] Existing headset microphones generally have the disadvantage of poor filtering of ambient noise. When the surrounding environment is noisy, the headset microphone will pick up and transmit the surrounding low-frequency noise, so that the voice received by the other party will also be accompanied by low-frequency noise. affect the transmission effect. Contents of the invention [0003] The present invention provides a noise-reduction microphone aimed at the deficiencies of the prior art, which can clearly transmit voice in a noisy environment. [0004] In order to achieve the above object, the technical solution adopted by the present invention is: it includes an upper shell, a lower shell, and a PCB board, and the PCB board is arranged on the lower shell, and it is characterized in that: the front end of...

Claims

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Application Information

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IPC IPC(8): H04R1/08H04R3/02
CPCH04R1/083H04R3/02
Inventor 刘文昭
Owner 常州叶晗电子科技有限公司
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