电子器件2018，Vol.41Issue(2)：507-511,5.DOI:10.3969/j.issn.1005-9490.2018.02.044
采用扩展型双线性变换进行病理嗓音共振峰修正
Pathological Voice Formant Correction by Extended Bilinear Transformation
摘要
Abstract
Aiming at the problem that the pathological voice of hyperthyroidism and vocal nodules are deviated from the normal voice during the repair,a method of formant correction using extended bilinear transformation(EBT) is proposed. First of all,use the line spectrum of the segmented fixed value of the offset to a correction,and then use the bilinear transform to bend the frequency. And the secondary bending factor was further improved to achieve the quadratic correction of the pathological vocal resonance peak. The experimental results show that the proposed algorithm is more effective than the other methods in correcting the first and second formants of pathological voice, especially for the fixed value offset method which is difficult to amend the hyperthyroidism and vocal nodules two pathological voice. KL distance was increased by 84% and 63%,respectively.关键词
病理嗓音/共振峰/线谱对/分段定值偏移/双线性变换Key words
pathological voice/formant/LSP/segment fixed value migration/bilinear transformation分类
医药卫生引用本文复制引用
周婉艺,徐天琪,周佳秦,张晓俊,陶智,孙宝印..采用扩展型双线性变换进行病理嗓音共振峰修正[J].电子器件,2018,41(2):507-511,5.基金项目
国家自然科学基金项目(61271359) （61271359）
江苏省高等学校大学生创新创业训练计划项目(201610285015) （201610285015）
