The Application of Nonlinear Spectral Subtraction Method on Millimeter Wave Conducted Speech Enhancement

被引：15

作者：

Li, Sheng ^{[1
,2
,3
]}

Wang, Jian Qi ^{[1
]}

Jing, Xi Jing ^{[1
]}

机构：

[1] Fourth Mil Med Univ, Dept Biomed Engn, Xian 710032, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Life Sci & Technol, Minist Educ, Key Lab Biomed Informat Engn, Xian 710049, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Life Sci & Technol, Dept Biomed Engn, Xian 710049, Peoples R China

来源：

MATHEMATICAL PROBLEMS IN ENGINEERING | 2010年 / 2010卷

基金：

中国国家自然科学基金;

关键词：

NOISE; RECOGNITION;

D O I：

10.1155/2010/371782

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A nonlinear multiband spectral subtraction method is investigated in this study to reduce the colored electronic noise in millimeter wave (MMW) radar conducted speech. Because the oversubtraction factor of each Bark frequency band can be adaptively adjusted, the nonuniform effects of colored noise in the spectrum of the MMW radar speech can be taken into account in the enhancement process. Both the results of the time-frequency distribution analysis and perceptual evaluation test suggest that a better whole-frequency noise reduction effect is obtained, and the perceptually annoying musical noise was efficiently reduced, with little distortion to speech information as compared to the other standard speech enhancement algorithm.

引用

页数：12

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