Double-microphone noise reduction cellphone communication device and processing method thereof

Abstract

The invention relates to a double-microphone noise reduction cellphone communication device and a processing method thereof. The device comprises a main microphone disposed at the lower end of a cellphone, an auxiliary microphone disposed at the upper end of the cellphone, a module for testing distances between a human mouth and microphones, a voice pickup microphone and background noise pickup microphone judgment module, and a double-microphone noise reduction module. The module for testing distances between the human mouth and microphones comprises a lower end distance sensor located at the main microphone, an upper rend distance sensor located at the upper end of the cellphone, and an accelerometer or a gyro disposed on the cellphone. The module for testing distances between the human mouth and microphones transmits the testing data to the voice pickup microphone and background noise pickup microphone judgment module, judges which one serves as the main microphone and which one serves as the auxiliary microphone, and transmits a signal to the double-microphone noise reduction module. The double-microphone noise reduction module carries out the noise reduction of the signal. The device can achieve the purpose of noise reduction in a better way, and can complete the sound transmission clearly.

Description

technical field [0001] The invention belongs to the technical field of mobile terminal equipment, and in particular relates to a dual-microphone noise reduction mobile phone communication device and a processing method thereof. Background technique [0002] At present, most mobile phones are equipped with two microphones, which can be divided into two ways: one is that one microphone is located at a certain position on the lower part of the mobile phone, and the other is at the top of the back of the mobile phone; the other is that one microphone is located at a certain position at the lower part of the mobile phone. , a microphone is located at the top of the front of the phone. The functions of these two dual-microphone configuration schemes are adaptive noise reduction functions. The lower microphone is mainly used to pick up the speaker’s voice, which is called the main microphone, and the upper microphone is used to pick up background noise, which is called the secondar...

AI Technical Summary

Problems solved by technology

And whether it is in the earpiece mode or in the hands-free mode, various calling gestures may occur. For the most extreme way, because the speaker of the mobile phone is generally located at the bottom of the mobile phone, when using the hands-free mode to make a call in a noisy environment, people It is very possible to turn the phone upside down so that the bottom speaker of the phone is aimed at the ear and the mouth is aimed at the top of the phone to make a call in such a mode

But in fact, it is impossible to obtain a better call experience under the above circumstances where the position of the mobile phone and the human mouth are constantly changing, so the dual-microphone noise reduction scheme originally designed by the mobile phone manufacturer for the mobile phone cannot play a good role. Noise reduction effect, so for the current dual microphone noise reduction technology of mobile phones, the application on mobile phones is actually limited

Images