| 基于改进阈值函数小波语音增强方法的研究 |
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| 引用本文： | 刘佳林,孙旋.基于改进阈值函数小波语音增强方法的研究[J].教育技术导刊,2010(2). |
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| 作者姓名： | 刘佳林 孙旋 |
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| 作者单位： | 桂林理工大学机械与控制工程学院; |
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| 摘 要： | 提出了一种基于小波阈值去噪的语音增强算法。根据含噪语音中噪声、清音和浊音的不同特点,首先对它们进行检测区分,然后采用改进的Garrote阈值函数分别对噪声、清音和浊音运用不同的阈值方案进行处理。该方法在很大程度上抑制了噪声,又减少了语音段清音的损失,提高了信噪比,在MATLAB7.1中的仿真实验结果表明,该方法具有较好的增强效果。
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| 关 键 词： | 小波阈值 改进的Garrote阈值函数 语音增强 |
Research of Speech Enhancement Method Based on an Improved Wavelet Thresholding |
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| Abstract: | This paper proposed a speech enhancement algorithm based on wavelet threshold denoising. According to difference of characteristics of Noisy Speech with noise,the unvoiced and voiced,firstly they were measured and distinguished,then the unvoiced,voiced and noise are processed by the improvement of the threshold Garrote function. To a large extent,this method suppressed noise,but also reduced the loss of the unvoiced of the speech segment,especially in the high signal to noise ratio,improved signal to noise ... |
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| Keywords: | Wavelet Threshold Improved Threshold Garrote Function Speech Enhancement |
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