采用线谱对分段定值偏移进行病理嗓音共振峰修正  

To Correct the Pathological Voice Formant with the Segment Offset of LSP

作　　者：周佳秦 张晓俊[1] 吴迪[1] 常静雅[1] 孙焕[1] 邵雅婷[1] 顾济华[1] 陶智[1] 

机构地区：[1]苏州大学物理与光电.能源学院,苏州215006

出　　处：《信息化研究》2016年第2期36-42,共7页INFORMATIZATION RESEARCH

基　　金：国家自然科学基金(No.61271359)

摘　　要：针对水肿、小结、息肉、甲亢4种常见病理嗓音的第一、二共振峰相对于正常嗓音共振峰的偏移问题,提出了一种线谱对分段定值偏移的方法修正病理嗓音共振峰,以使其趋于正常嗓音共振峰的范围。通过对比正常嗓音与病理嗓音,获取其共振峰以及其相应的线谱对参数,计算其偏移比例值的范围,根据不同的病理嗓音确认共振峰所对应的偏移比例值对病理嗓音共振峰的相应线谱对参数进行修正。实验结果表明,修正后病理嗓音共振峰的范围与正常嗓音共振峰的范围比例值趋同,采用频谱相对距离P值进行评价,结果均大于0.6,验证了文章所提出的算法有效性。According to the offset problem of the first, second formant of the edema, nodule, polyp, hyperthyroidism, four common pathological voices, and a segment offset of LSP of pathological voice for formant correction is proposed. To obtain the corresponding formant and LSP parameters by the characteristic of formant tracking of LSP, modifying the parameters to achieve the purpose of formant correction . The experimental results show that the range of the modified pathological voice formant is similar to that of the normal range. The results P are more than 0.5. The results show that the proposed algorithm is effective.

关 键 词：共振峰 线谱对 病理嗓音 分段定值偏移 

分 类 号：TN912.3[电子电信—通信与信息系统]