| 潘欣裕,赵鹤鸣,陈雪勤.修正自适应格型陷波器及其应用[J].声学技术,2007,(6):1254~1258 |
| 修正自适应格型陷波器及其应用 |
| An improved adaptive lattice notch filter and its application |
| 投稿时间：2006-12-31 修订日期：2007-04-27 |
| DOI： |
| 中文关键词: 自适应格型陷波器 反射系数 声门闭合时刻 |
| 英文关键词: adaptive lattice notch filter reflectance glottal closure instants |
| 基金项目:国家自然科学基金资助项目(No.60572076);江苏省高校自然科学基金资助项目(No.05KJB510113) |
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| 中文摘要: |
| 提出了一种频率响应非对称的修正自适应格型陷波器(improved adaptive lattice notch filter,I-ALNF),并且提出一种新的自适应格型递推算法。将陷波器传递函数零极点部分同时引入到自适应调整算法中,使陷波器具有更好的特性。该陷波器应用于语音信号处理,根据其反射系数推导出自适应陷波频率,可以较容易的检测到语音声门闭合时刻(glottal closure instant,GCI)的位置。 |
| 英文摘要: |
| An improved adaptive lattice notch filter (I-ALNF)having unsymmetrical frequency response is proposed. A new improved adaptive algorithm to fulfill I-ALNF using zero-pole parameters is deduced. Based on good detection performance of the I-ALNF,the glottal closure instant (GCI)can be positioned through an instant frequency,which is iterated by reflectance. Experiment results show that the proposed method is effective. |
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