An Improved Wavelet-Based Speech Enhancement Method Using Adaptive Block Thresholding

摘要：

An improved wavelet-based speech enhancement method using adaptive block thresholding is proposed. Adaptive block thresholding is introduced by G. Yu 1 to eliminate the musical noise artifacts, but the performance for unvoiced speech is not satisfactory. To solve this problem, a voiced/unvoiced decision is applied and a small block size is set for unvoiced speech. Furthermore, the thresholding is adjusted considering both the intrascale and interscale dependencies of wavelet coefficients. The experimental results show that the improved method can obtain better denoising performance than the method proposed by G. Yu, especially for unvoiced speech.

作者: Bin Zhou Xiongwei Zhang Xia Zou

作者单位: Institute of Communications Engineering PLA Univ.of Sci.& Tech.Nanjing 210007, P.R.China Institute of Command Automation PLA Univ.of Sci.& Tech.Nanjing 210007, P.R.China

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）