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Method and system for multi-sound localization

A multi-sound source, two-dimensional position technology, applied in positioning, radio wave measurement system, voice analysis, etc., can solve problems such as poor robustness

Active Publication Date: 2018-06-22
TAIYUAN UNIV OF TECH
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Problems solved by technology

Most of the existing multi-sound source localization methods only consider the location characteristics of the sound source during localization, resulting in poor robustness

Method used

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  • Method and system for multi-sound localization

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0065] figure 1 It is a schematic flowchart of the multi-sound source localization method of the present invention. Such as figure 1 As shown, the method includes:

[0066] Step 100: Obtain an initial speech si...

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Abstract

The invention discloses a method and a system for multi-sound localization. The method comprises the following steps: acquiring an initial voice signal set; pre-processing each initial voice signal; dividing the pre-processed signals into a plurality of sub-bands via a basilar membrane filter; acquiring a cross-power spectral density functions of a same sub-band; fusing the cross-power spectral density functions of all sub-bands; acquiring a two-dimensional position / base frequency characteristic function of a microphone pair corresponding to each first voice signal; acquiring the two-dimensional position / base frequency characteristic function of each microphone pair; acquiring a fused weighted two-dimensional position / base frequency characteristic function; and confirming azimuth angles and base frequencies of various sound sources within a preset threshold range in accordance with a function value of the fused weighted two-dimensional position / base frequency characteristic function. According to the method and the system provided by the invention, mutual interference between sound signals is avoided and localization accuracy is improved. Moreover, the method and the system are relatively high in reverberation resistance, and locations of the various sound sources can be accurately estimated under a circumstance of strong reverberation.

Description

technical field [0001] The present invention relates to the field of sound source localization, in particular to a method and system for localization of multiple sound sources. Background technique [0002] Sound source localization technology has always been an important research content in the field of speech signal processing, and it has important application value in the fields of target localization, video conferencing, remote listening and speech recognition. The sound source in a closed environment will generate a randomly changing sound field in the environment where it is located. The characteristics of the sound field are related to the position of the sound source and the acoustic environment of the room. At the same time, there will be reverberation, Background noise, and aliasing among multi-sound source signals, the above-mentioned interferences will seriously affect the accuracy of the multi-sound source localization method. [0003] Traditional sound source ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216G10L21/0208G10L21/0264G10L25/21G01S5/20
CPCG01S5/20G10L21/0208G10L21/0216G10L21/0264G10L25/21G10L2021/02166
Inventor 黄丽霞张雪英李凤莲昝丹斐张岁岁
Owner TAIYUAN UNIV OF TECH
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