| 长时共振峰分布特征在声纹鉴定中的应用 |
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| 引用本文： | 曹洪林,孔江平.长时共振峰分布特征在声纹鉴定中的应用[J].中国司法鉴定,2013(1):62-67. |
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| 作者姓名： | 曹洪林 孔江平 |
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| 作者单位： | 1. 北京大学中文系,北京 100871;中国政法大学 证据科学教育部重点实验室,北京 100088
2. 北京大学中文系,北京,100871 |
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| 基金项目： | 国家自然科学基金项目(61073085) |
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| 摘 要： | 目的利用长时共振峰分布特征区分不同发音人。方法以汉语普通话为语料,对20位男性发音人和20位女性发音人的前四条共振峰的长时分布情况进行了统计比较分析。结果发现各长时共振峰分布的均值、中位数、众数、峰数、峰度和斜度等参数能够反映出不同发音人的个性特征,稳定性较强。前四条长时共振峰的分布结构比较均匀,由此推测在语料足够长的情况下,所有元音平均后的结果应该是一个类似央元音的＂音＂。结论利用长时共振峰分布特征可以较好地区分不同发音人。
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| 关 键 词： | 长时分布 共振峰 普通话 声纹鉴定 |
Study of Long-Term Formant Distributions in Forensic Phonetics |
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| CAO Hong-lin,KONG Jiang-ping.Study of Long-Term Formant Distributions in Forensic Phonetics[J].Chinese Journal of Forensic Sciences,2013(1):62-67. |
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| Authors: | CAO Hong-lin KONG Jiang-ping |
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| Institution: | 1(1.Department of Chinese Language and Literature,Peking University,Beijing 100871,China;2.Key Laboratory of Evidence Science,Ministry of Education,China University of Political Science and Law,Beijing 100871,China) |
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| Abstract: | Objective To discriminate speakers using the long-term formant distribution（LTF） method.Method Based on Mandarin Chinese speech,the first four LTFs of twenty male speakers and twenty female speakers were calculated and analyzed.Results It was found that the mean value,median value,mode value,number of peaks,kurtosis and skewness of the LTFs could effectively show the speaker-specific characteristics.Meanwhile,as the structure of the first four LTFs shows well-proportioned distributions,it could be supposed that the average of all vocalic portions would generate a schwa-like sound,if the speech materials were sufficient enough.Conclusion The LTF feature can be used to discriminate speakers effectively. |
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| Keywords: | long-term distribution formant Mandarin Chinese forensic phonetics |
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