文章摘要
于凤芹,阚仁根.听觉掩蔽效应语音增强的改进算法[J].声学技术,2008,(5):712~716
听觉掩蔽效应语音增强的改进算法
A new speech enhancement based on human auditory masking
投稿时间:2007-11-13  修订日期:2008-02-21
DOI:
中文关键词: 语音增强  听觉掩蔽  音乐噪声  语音谱平滑
英文关键词: speech enhancement  human auditory masking  musical noise  optimal smoothing
基金项目:
作者单位E-mail
于凤芹 江南大学通信与控制工程学院, 江苏 无锡, 214122 yufq@jiangnan.edu.cn 
阚仁根 江南大学通信与控制工程学院, 江苏 无锡, 214122  
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中文摘要:
      含噪信号利用掩蔽效应去噪后,噪声估计的误差导致语音失真。在利用听觉阈值计算谱减系数时提出了一种改进的计算方法,通过增加修改参数来抑制语音的过分衰减,减少了语音失真,然后基于MMSE准则对增强的语音谱再进行平滑处理,进一步抑制音乐噪声。实验表明该算法在不影响语音失真的基础上,提高了信噪比,消除了音乐噪声,主观测听的语音音质明显提高。
英文摘要:
      After a noisy signal is denoised by auditory masking,the noise estimation errors lead to voice distortion.In the use of auditory masking value of the coefficient spectrum,an improved method of calculation is proposed and amended by adding parameters to curb excessive attenuation voice and reduce voice distortion,then based on the MMSE guidelines,to enhance the voice spectrum further smoothing treatment and further inhibit music noise.Experiments show that the algorithm improves signal to noise ratio and eliminates music noise without effects on voice distortion.The quality of subjective listening to voice improves markedly.
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