Dual microphone noise reduction system and noise reduction method for earphones

Abstract

The invention provides a dual-mic denoising system and a dual-mic denoising method of an earphone. The method comprises the steps as follows: a master mic collects a voice signal, and sends the collected voice signal to a voice activity detection module to detect the voice signal; the voice signal is sent to a noise parameter computation module, and meanwhile, an auxiliary mic collects an environment sound signal, and sends the environment sound signal to a noise parameter computation module; the noise parameter computation module computes noise suppression strength; the voice signal and the environment sound signal are sent to the noise suppression module; and the noise suppression module performs noise suppression treatment on the voice signal and the environment sound signal, and outputs the processed signal. According to the system and the method provided by the invention, the auxiliary mic is used for collecting environment noise to suppress the noise in a call of the master mic on the basis of denoising actively, so that the non-stable noise in the environment is filtered while the stable noise is effectively suppressed.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a dual-microphone noise reduction system and a noise reduction method for earphones. Background technique [0002] With the progress of society and the improvement of people's living standards, earphones have become an indispensable daily necessities in people's lives. People often answer and make calls on the street, bus, and subway. The noise in this environment will be picked up by the microphone of the headset, mixed with what we say, and sent upstream to the earpiece of the other party's phone, affecting The voice quality of the other party answering the call, so the uplink noise reduction technology is very useful. [0003] There are generally two types of wired earphones in the prior art. One type of ordinary wired earphone basically has no uplink noise reduction function. In a noisy environment, the noise is often picked up by the call microphone and transmitted t...

AI Technical Summary

Problems solved by technology

The active noise reduction microphone is specially used to eliminate external environmental noise; the call microphone is specially used for uplink calls, and its noise reduction ability is limited. It is only effective for smooth noise and poor for filtering other noise in the environment. Make a call, the quality of the uplink call is poor

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