文章摘要
李正友,李天伟,黄谦,郭姣.改进庞加莱截面基音检测方法研究[J].,2012,31(5):379-386
改进庞加莱截面基音检测方法研究
Improved ponicaré pitch detection methods
投稿时间:2012-02-20  
中文摘要:
      评述了Kubin等人提出的基于庞加莱截面的基音检测方法,指出其存在周期点筛选难、初始点选择方法不完善、要求时域波形具有明显的周期性等问题,导致其实用性不强。在此基础上,提出了变邻域和变初始点的改进算法,并与归一化互相关方法相结合,解决了上述问题。实验结果表明,改进后的基于庞加莱截面的基音检测方法具有时间分辨率高、误判率低、实用性强等优点。
英文摘要:
      After the review of speech pitch detection method based on ponicaré sections proposed by Kubin, some disadvantages about the method are pointed out. For example it is hard to choose some points to calculate the periodic pitch from all the points that pass through the ponicaré map, the way to choose the initial point to locate the map is not good, and the time-domain wave of the speech signal must be visibly periodic. The algorithm suggested in this paper could solve those problems by changing the neighborhood radius, adjusting the initial point, and using normalized cross-correlation method as pre-work. The improved methods are proved to have higher resolution, to be more accurate, so it is more practical.
DOI:10.11684/j.issn.1000-310X.2012.05.010
中文关键词: 庞加莱截面,基音检测,变邻域,归一化互相关
英文关键词: Ponicaré map, Pitch detection, Changed neighborhood radius, Normalized cross-correlation
基金项目:国家自然科学基金项目(60572160); 海军大连舰艇学院科研发展基金资助项目(20122412)
作者单位
李正友 大连舰艇学院航海系 大连 116018
 
李天伟 大连舰艇学院航海系 大连 116018
 
黄谦 大连舰艇学院航海系 大连 116018
 
郭姣 大连舰艇学院航海系 大连 116018
 
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