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Microphone array speech enhancement method and device, electronic equipment and storage medium

A microphone array and voice enhancement technology, which is applied in voice analysis, instruments, etc., can solve problems such as limitation and enhancement of voice, and achieve the effect of improving the effect of voice enhancement

Active Publication Date: 2022-01-04
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, both masking and beamforming are performed step by step in a cascaded manner, and the beamformer is pre-designed under certain sound field assumptions, which may limit the scheme to enhance speech and reduce noise Ability

Method used

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  • Microphone array speech enhancement method and device, electronic equipment and storage medium
  • Microphone array speech enhancement method and device, electronic equipment and storage medium
  • Microphone array speech enhancement method and device, electronic equipment and storage medium

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Embodiment Construction

[0084] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0085] figure 1 It is a schematic flowchart of a microphone array speech enhancement method provided by the embodiment of the present application. Such as figure 1 As shown, the microphone array speech enhancement method of the present application, the following steps:

[0086] S1, acquiring a voice signal to be enhanced with a known...

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Abstract

The invention relates to a microphone array speech enhancement method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a to-be-enhanced speech signal with a known sound source direction through a microphone array; extracting a spectrum feature and a direction coherence feature of the to-be-enhanced speech signal; inputting the spectrum feature and the direction coherence feature of the to-be-enhanced speech signal into a pre-trained speech enhancement network to obtain an enhanced Fourier coefficient of the to-be-enhanced speech signal; and carrying out inverse Fourier transform on the enhanced Fourier coefficient of the to-be-enhanced speech signal to obtain an enhanced speech signal. The filtering operation of beam forming is realized through the speech enhancement network, and the weight coefficient of beam forming is obtained by training based on a data-driven supervised learning method and is closer to an actual application scene. Therefore, the speech enhancement effect is improved.

Description

technical field [0001] The present application relates to the field of speech processing, and in particular to a microphone array speech enhancement method, device, electronic equipment and storage medium. Background technique [0002] Voice is one of the most natural forms of interaction between humans and machines. In the era of the Internet of Things, the application scenario of voice interaction transitions from the near field to the far field. Since the energy of the sound is exponentially attenuated with the propagation distance during the propagation process, the voice signal is interfered by noise and reverberation in the far field condition. It is more serious and greatly affects the performance of applications such as speech recognition and voice communication. Speech enhancement aims to eliminate noise and reverberation while avoiding speech distortion as much as possible to improve the intelligibility and perceptual quality of speech. It is of great value to spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216G10L21/0232
CPCG10L21/0216G10L21/0232G10L2021/02166
Inventor 聂帅梁山陶建华易江燕
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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