重庆邮电大学学报（自然科学版）2016，Vol.28Issue(4)：462-467,6.DOI:10.3979/j.issn.1673-825X.2016.04.004
一种基于修正倒谱平滑技术改进的维纳滤波语音增强算法
An improved Wiener filtering speech enhancement algorithm based on modified cepstrum smooth technology
摘要
Abstract
Because the noise will influence cepstrum of the gain functions when using traditional cepstrum smooth technolo-gy,it reduces the performance of noise reduction while suppressing music noise.To solve this problem,we propose a modi-fied cepstrum smooth technology to improve Wiener filter speech enhancement algorithm.In the proposed scheme,we com-pute the range of selective smooth by using the estimation of clean speech cepstrum which is obtained by maximum likeli-hood criterion.The proposed method modifies the accuracy of selective smoothing,therefore it improves the noise reduction performance of the traditional cepstrum smooth Wiener filter speech enhancement algorithm.Finally,we simulate the pro-posed algorithm and compare it with traditional algorithm in different noise scenario.The simulation results show that the proposed algorithm can well reduce the noise and reserve the speech feature structure,so it has a better quality improve-ment of the noisy speech than traditional algorithm.关键词
语音增强/维纳滤波/音乐噪声/增益函数/修正倒谱平滑Key words
speech enhancement/Wiener filter/music noise/gain functions/modified cepstrum smooth分类
信息技术与安全科学引用本文复制引用
李季碧,马永保,夏杰,刘金刚..一种基于修正倒谱平滑技术改进的维纳滤波语音增强算法[J].重庆邮电大学学报（自然科学版）,2016,28(4):462-467,6.基金项目
国家自然科学基金项目（61501072）；重庆市教委项目（KJ130504） Foundation ItemsThe National Natural Science Foundation of China（61501072）；The Science and Technology Research Project of Chongqing Municipal Education Commission of China （）
