Method and system for performing sound source separation on sound signal acquired by microphone array

A microphone array and voice signal technology, applied in voice analysis, instruments, etc.

Active Publication Date: 2018-11-02
北京三听科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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[0005] The present invention ai...

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  • Method and system for performing sound source separation on sound signal acquired by microphone array
  • Method and system for performing sound source separation on sound signal acquired by microphone array

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Embodiment Construction

[0063] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

[0064] The cocktail party problem is a traditional problem in the field of voice signal processing. For example, there may be multiple speakers talking at the same tim...

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Abstract

The invention provides a method and a system for performing sound source separation on a sound signal acquired by a microphone array. The method comprises the steps of receiving the sound signal and detecting the number n of the sound sources in the sound signal; determining whether n is larger than one, if yes, calculating a direction-of-arrival angle value of each sound source; ordering the direction-of-arrival angle values according to a magnitude sequence, and calculating a difference between two adjacent direction-of-arrival angle values; determining whether all angle intervals is largerthan or equal with a preset angle interval threshold C, if yes, executing a next step, and otherwise, correcting two or more direction-of-arrival angle values, and executing a next step; performing wave beam forming based on the direction-of-arrival angle value and/or the corrected direction-of-arrival angle value for obtaining n enhanced voice signals, and executing a blind source separation algorithm on n enhanced voice signals, and n separated sound signals which correspond with n sound sources. The method and the system according to the invention can realize better sound source separationperformance.

Description

Technical field [0001] The present invention relates to the field of speech signal processing, and in particular to a method and system for separating a sound source of a speech signal picked up by a microphone array. Background technique [0002] The cocktail party problem is a traditional problem in the field of voice signal processing. For example, there may be multiple speakers talking at the same time in a public place, and there may also be various environmental noises, background music, etc. This is a typical cocktail party problem. Therefore, when a microphone array is used to receive voice signals from multiple different sound sources at the same time, how to accurately separate the voice signals from these multiple different sound sources is a problem that has plagued human-machine voice interaction applications for a long time. [0003] In addition, there is a meeting transfer system for real-time completion of meeting minutes in the industry, so as to efficiently compl...

Claims

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Application Information

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IPC IPC(8): G10L21/0208G10L21/0216G10L21/028
CPCG10L21/0208G10L21/0216G10L21/028G10L2021/02087G10L2021/02166
Inventor 代金良景源
Owner 北京三听科技有限公司
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