| A NEW SPEECH ENHANCEMENT METHOD |
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| 作者姓名： | 李冲泥 胡光锐 |
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| 作者单位： | LI Chong ni(，HU Guang rui ) (School of
Electronics and Information，Shanghai Jiaotong Univ.，Shanghai 200030，China) |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｖａｒｉｏｕｓｓｐｅｅｃｈｐｒｏｃｅｓｉｎｇａｐｐｌｉｃａｔｉｏｎｓ，ｉｔｉｓｖｅｒｙｃｏｍｍｏｎｔｏｆｉｎｄｔｈｅｄｅｇｒａｄａｔｉｏｎｏｆｔｈｅｓｐｅｅｃｈｑｕａｌｉｔｙｃａｕｓｅｄｂｙａｃｏｕｓｔｉｃｂａｃｋｇｒｏｕ...
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A NEW SPEECH ENHANCEMENT METHOD |
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| LI Chong,ni.A NEW SPEECH ENHANCEMENT METHOD[J].Journal of Shanghai Jiaotong university,1999(1). |
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| Authors: | LI Chong ni |
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| Abstract: | A
new speech enhancement method, which performs soft thresholding de noising in wavelet
domain to suppress the acoustic background noise, was proposed. In order to prevent the
quality degradation of the unvoiced sound during the de noising process, the unvoiced regions
were separated from the noisy speech signal and treated in a different way from the voiced
regions. By doing such pre processing, the noise components of the corrupted speech can be
effectively suppressed, while the important information in the unvoiced regions is not distorted.
The simulation results demonstrate the validity of this method. |
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| Keywords: | speech enhancement wavelet transforms soft thresholding |
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