Real-time voice denoising method under short-distance conversation scene used for double-microphone mobile phone

Abstract

The invention relates to a real-time voice denoising method under a short-distance conversation scene used for a double-microphone mobile phone. The method comprises the following steps: receiving noisy voice signals of a main channel and an auxiliary channel, wherein the noisy voice signals comprise voice and background interfering noises; extracting original acoustic features from the noisy voice signals; inputting the original acoustic features into a convolutional recursive network (CRN) for simulating temporal dynamics of the voice, and carrying out masking estimation, thus obtaining a phase-sensitive mask PSM; and applying the estimated phase-sensitive mask PSM to the noisy voice signals of the main channel, so that wave signals of the denoising voice are re-synthesized. According tothe technical scheme, the performance is excellent, conversation noises can be effectively reduced under the short-distance conversation scene, and compared with the prior art, the technical scheme has the advantages of having stronger practicability, and having no dependence on the noises and a speaker.

Description

technical field [0001] The invention relates to the field of electronic communication, and more specifically, to a real-time voice noise reduction method for a dual-microphone mobile phone in a close-distance conversation scene. Background technique [0002] With the widespread use of mobile phones, mobile voice communication has become an increasingly important application. If the far-end talker is in a noisy acoustic environment, the quality and intelligibility of received voice will be severely degraded by background noise. To attenuate the background noise of noisy speech signals, most mobile phones have integrated speech enhancement algorithms. Typically, two to four microphones are included in a mobile phone for better enhancement. In a typical two-microphone configuration, the primary microphone is placed on the bottom of the mobile phone and the secondary microphone is placed on the top, such as Figure 5 shown. In close conversation scenarios, speech signals are p...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is how to use the real-time voice noise reduction method of the dual-microphone mobile phone in the scene of close-dis

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