Electronic product capable of attenuating microphone noise

Abstract

The invention discloses an electronic product capable of attenuating microphone noise. The electronic product comprises a microphone and a shell, wherein the shell is provided with a plurality of sound inlet holes; one independent audio transmission channel is formed between each sound inlet hole and the microphone respectively; the length of each audio transmission channel is larger than a vertical distance between the microphone and the shell; the audio transmission channels construct a front cavity of the microphone together; the equivalent acoustic capacitance Ca of the front cavity is less than or equal to Co; and Co is acoustic capacitance being equivalent to the volume of the front cavity determined according to the requirements of the high frequency cut-off frequency of a microphone monomer and the application scenario of the electronic product on high frequency cut-off frequency. Through special design of the front cavity of the microphone, the noise protection performance ofthe electronic product is improved on the premise of ensuring high-frequency response performance of the microphone.

Description

technical field [0001] The invention belongs to the technical field of noise suppression, and in particular relates to a technology capable of effectively attenuating microphone wind noise. Background technique [0002] With the continuous improvement of people's living standards and the continuous strengthening of health awareness, more and more people will choose appropriate physical activities to exercise after work. Running and cycling are relatively common ways of exercising at present, and electronic products such as sports earphones and cycling glasses can listen to music and answer calls during exercise, which can greatly increase the user's exercise fun. [0003] However, when people are running and cycling, a large airflow will flow from the sound inlet hole of the electronic product to the microphone, thereby generating a lot of wind noise, so that when people are talking, the other party can only hear the sound of the wind, but not the sound. Clearing the conten...

AI Technical Summary

Problems solved by technology

[0005] Because the existing electronic products with built-in microphones all set the sound inlet 17 at the position facing the microphone 11 on the shell 13, although this can ensure that the volume of the front cavity 16 is the smallest, avoiding the design of the electronic product due to the front cavity 16 However, the microphone 11 is directly facing the sound inlet 17, so that the external airflow can directly reach the microphone 11, and then a large wind noise will appear in the sound picked up by the microphone 11. , affecting the user experience

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