发明名称 |
Method for recovering target speech based on speech segment detection under a stationary noise |
摘要 |
Method for recovering target speech by extracting signal components falling in a speech segment, which is determined based on separated signals obtained through the Independent Component Analysis, thereby minimizing the residual noise in the recovered target speech. The present method comprises: the first step of receiving target speech emitted from a sound source and a noise emitted from another sound source and extracting estimated spectra Y* corresponding to the target speech by use of the Independent Component Analysis; the second step of separating from the estimated spectra Y* an estimated spectrum series group y* in which the noise is removed by applying separation judgment criteria based on the kurtosis of the amplitude distribution of each of estimated spectrum series in Y*; the third step of detecting a speech segment and a noise segment of the total sum F of all the estimated spectrum series in y* by applying detection judgment criteria based on a predetermined threshold value T that is determined by the maximum value of F; and the fourth step of extracting components falling in the speech segment from the estimated spectra Y* to generate a recovered spectrum group of the target speech for recovering the target speech.
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申请公布号 |
US7533017(B2) |
申请公布日期 |
2009.05.12 |
申请号 |
US20040570808 |
申请日期 |
2004.08.31 |
申请人 |
KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUSTRY, SCIENCE AND TECHNOLOGY |
发明人 |
GOTANDA HIROMU;KANEDA KEIICHI;KOYA TAKESHI |
分类号 |
G10L15/20;G10L21/02;G10L11/02;G10L15/04 |
主分类号 |
G10L15/20 |
代理机构 |
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