Noise estimation using high frequency regions for speech enhancement in low SNR environments
Noise estimation using high frequency regions for speech enhancement in low SNR environments
复制标题
使用高频区域进行噪声估计以在低 SNR 环境中进行语音增强
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Tetsuya Shimamura
中科院分区：
文献类型：
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作者：
Junpei Yamazlchi;Tetsuya Shimamura
本文提出了一种用于语音增强的噪声估计方法，该方法在低信噪比环境下具有较好的效果。对于低信噪比语音，噪声谱分量的数量大于语音谱分量的数量。通过使用这个属性，有噪语音频谱的高频分量被平均，并且噪声水平被估计。该方法在分析阶段进行噪声水平估计，能够适应非平稳噪声环境。通过实验验证了所提出的噪声估计方法的有效性。
The paper presents a noise estimation method for speech enhancement, which provides a good result in low SNR environments. For low SNR speech, the amount of the noise spectrum components is more than that of the speech spectrum components. By using this property, high frequency components of a noisy speech spectrum are averaged and the noise level is estimated. The noise level estimation is performed in the analysis segment, thus this method can adapt to non-stationary noise conditions. The effectiveness of the proposed noise estimation method is confirmed by experiments.