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A voice extraction method, device, electronic equipment and storage medium

A technology of speech extraction and speech, which is applied in speech analysis, instruments, etc., and can solve the problem of reduced effect of noise suppression

Active Publication Date: 2022-02-25
北京远鉴信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present application is to provide a speech extraction method, device, electronic equipment and storage medium, which are used to improve the problem that the effect of noise suppression is significantly reduced due to the misidentification of the point source noise as the target speech

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  • A voice extraction method, device, electronic equipment and storage medium
  • A voice extraction method, device, electronic equipment and storage medium
  • A voice extraction method, device, electronic equipment and storage medium

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Embodiment Construction

[0031] 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.

[0032] Before introducing the speech extraction method in the embodiment of the present application, first introduce some concepts involved in the embodiment of the present application. Some concepts involved in the embodiment of the present application are as follows:

[0033] Artificial Intelligence (AI) refers to a new technical science that studies and develops theories, methods, technologies and application systems for simulating, extending and expanding human intelligence. It is a branch of computer science that attempts to understand the essence of intelligence and produce a new intelligent machine that can respond in a manner similar to human intelligence. Research in this field includes robotics, language recognition, image recognition, natural language processing a...

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Abstract

The present application provides a voice extraction method, device, electronic equipment and storage medium, the method comprising: performing Fourier transform on the voice signal collected by the microphone array to obtain the frequency domain signal; using one enhancement filter and at least one blocking filter respectively The filter filters the frequency domain signal to obtain an enhanced beam and at least one blocked beam; calculate the probability of speech in the desired direction according to the enhanced beam and at least one blocked beam; An adaptive filter is determined by the beam; an enhanced beam and at least one blocked beam are filtered by the adaptive filter to obtain a target signal; an inverse Fourier transform is performed on the target signal to obtain a target voice. The method calculates in advance the probability that the target voice exists in the desired direction, thereby improving the problem that the effect of noise suppression is significantly reduced due to the misidentification of the point source noise as the target voice.

Description

technical field [0001] The present application relates to the technical field of speech recognition, in particular, to a speech extraction method, device, electronic equipment and storage medium. Background technique [0002] At present, there are many subdivided fields of artificial intelligence, such as: speech recognition and voiceprint recognition and so on. In the current field of speech recognition, the method for extracting the target speech is, for example, an adaptive speech enhancement algorithm designed based on the magnitude of the correlation. This algorithm is suitable for background noise separation in scattered noise scenes, the voice of the speaker in the room is the target voice, and the street noise outside the room is the background noise; if there is point source noise in the room, for example: someone talking on TV, another The algorithm will misidentify the point source noise as the target speech, and the effect of noise suppression will be significan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232G10L25/84
CPCG10L21/0208G10L21/0216G10L21/0232G10L25/84G10L2021/02165
Inventor 王秋明吴富章邓菁
Owner 北京远鉴信息技术有限公司