| 谱相减法语音增强技术中"音乐噪声"的抑制 |
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| 引用本文： | 张仁志,崔慧娟.谱相减法语音增强技术中"音乐噪声"的抑制[J].电声技术,2005(5):35-38. |
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| 作者姓名： | 张仁志 崔慧娟 |
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| 作者单位： | 清华大学,电子工程系,微波与数字通信国家重点实验室,北京,100084 |
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| 摘 要： | 针对谱相减法残余“音乐噪声”过强的缺点，采用幅度-带宽联合分析的方法，自适应地调整各子带谱减因子，通过消除随机噪声谱峰，达到了抑制残余“音乐噪声”的目的。新算法经过仿真实验，并与其它算法的结果进行了对比。结果表明在几乎不损伤清晰度的情况下，该算法更好地抑制了“音乐噪声”，且信噪比得到了大幅提高。
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| 关 键 词： | 语音增强 谱相减法 谱减因子 幅度-带宽联合分析 |
| 文章编号： | 1002-8684(2005)05-0035-04 |
| 修稿时间： | 2004年11月13 |
Reduction of Annoying Musical Noise in Spectral Subtraction Method for Speech Enhancement |
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| ZHANG Ren-zhi,CUI Hui-juan.Reduction of Annoying Musical Noise in Spectral Subtraction Method for Speech Enhancement[J].Audio Engineering,2005(5):35-38. |
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| Authors: | ZHANG Ren-zhi CUI Hui-juan |
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| Abstract: | Aiming at reducing annoying musical noise in the spectral subtraction method, a novel method of adaptively adjusting the sub-band subtraction factor with amplitude-bandwidth analysis is proposed. By eliminating the stochastic peak of noise spectrum, the remained musical noise is restrained. Simulation on computer shows that the new algorithm is more effective in eliminating musical noise and improving SNR without significantly impairing the intelligibility of speech than other ones. |
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| Keywords: | speech enhancement spectral subtraction method subtraction factor magnitude-bandwidth analysis |
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