摘要
针对声纹鉴定中出现的捏鼻伪装的声纹特征参数的鉴定已经成为现在很多刑事案件中的鉴定技术瓶颈,因此有针对性的通过将多组采集的语音材料进行语音图谱分析实验,来分析探讨正常情况和捏鼻伪装情况下男生和女生语音声纹的共振峰、窄带语图、宽带语图、基音、频谱图等其他一些声纹参数的变化规律,发现捏鼻伪装情况下虽然使得声纹特征发生了明显的改变,但是不同个体之间捏鼻伪装的声纹参数存在显著的差别,关键是通过声纹特征参数的图谱分析发现了如何针对捏鼻伪装语音更为有效地声纹特征参数的鉴定方向和方法,通过分析捏鼻伪装和正常犮音两种情况下的语音声纹各的项参数,确定在声纹鉴定中如何快速取得实质性结果的分析方法,从而提高对案件的审查速度,此次设计实验对于捏鼻伪装声纹鉴定提出更为准确高效的鉴定方法。
The identification of the voiceprint characteristic parameters of the nose-pinch disguise appearing in the voiceprint identification has become a difficult identification technical bottleneck in many criminal cases.Therefore,it is targeted to use multiple sets of collected voice materials for voice Atlas analysis experiment,to analyze and explore the change law of some other voiceprint parameters such as the formant,narrowband sonogram,broadband sonogram,pitch,spectrogram and other voiceprint parameters of male and female voiceprints under normal conditions and nose pinching disguise,and although the voiceprint characteristics have changed significantly in the case of camouflage,there are significant differences in the voiceprint parameters of the nose-pinch camouflage between different individuals.The key is to find out how to improve the voiceprint characteristics of the voiceprint through the analysis of the voiceprint feature parameters.In order to effectively identify the direction and method of the voiceprint characteristic parameters,by analyzing the parameters of the voice voiceprint in both the nose-pinch disguise and the normal pronunciation,the analysis method of how to quickly obtain substantive results in the voiceprint identification is determined.In order to improve the review speed of the case,this design experiment proposes a more accurate and efficient identification method for the identification of nose-pinching and disguised voiceprints.
作者
俞杰
Yu Jie(Chengguan Branch of Lanzhou Public Security Bureau,Lanzhou Gansu,730000 China)
出处
《西部公安论坛》
2021年第4期16-21,共6页
Journal of Western Public Security
关键词
捏鼻伪装
声纹鉴定
共振峰
窄带语图
宽带语图
基音
频谱图
Pinch nose camouflage
voiceprint identification
formant
narrowband sonogram
wideband sonogram
pitch
spectrogram
