摘要
对于语音同一性鉴定,检材语音和样本语音具有可比性是开展鉴定的重要前提。为了对不同手机软件录音的可比性进行探索,对微信、抖音、花椒直播和录音机采集的语音信号进行了对比分析。研究发现,微信语音的有效频谱显示范围为0-8 kHz,抖音和花椒录制视频中音频信号为0-12 kHz,通过微信传输的视频中音频信号未见压缩或削减,微信、抖音、花椒直播等手机软件和录音机采集的语音信号的频谱特征在频率分布及走向、振幅强弱等特征,以及统计数据上均表现一致。研究说明不同手机软件录音与专业录音机录音具有可比性,均可用于语音同一性鉴定。
For voice homogeneity identification,the comparability of the test voice material and the sample voice is an important prerequisite for the identification.In this study,in order to explore the comparability of different cell phone software recordings,the voice signals collected by WeChat,Jitterbug,Hua Jiao Live and recorders were compared and analyzed.It was found that the effective spectrum of WeChat voice showed a range of 0-8 kHz,the audio signals in the recorded videos of Jitterbug and Pepper were 0-12 kHz,and no compression or reduction was seen in the audio signals in the videos transmitted through WeChat.The spectral characteristics of the voice signals collected by WeChat,Jitterbug,Pepper Live and the recorder showed a frequency distribution and direction,amplitude strength and other characteristics,as well as statistical data.The frequency distribution and direction,amplitude,and other characteristics and the statistical data,are consistent.The study shows that different cell phone software recordings and professional recorders are comparable and can be used for voice identity identification.
作者
耿浦洋
卢启萌
郭弘
施少培
卞新伟
GENG Puyang;LU Qimeng;GUO Hong;SHI Shaopei;BIAN Xinwei(Department of audio image and electronic examination,Academy of Forensic Science,Shanghai 200063)
出处
《山西警察学院学报》
2022年第2期80-84,共5页
Journal of Shanxi Police College
基金
国家社会科学基金青年项目“毒品成瘾人群的言语产出及感知特征研究”(21CYY011)
中央级科研院所公益研究基金“人体生理信息的语言表征及其在声纹鉴定中的应用探究”(GY2021G-9)。
关键词
微信
短视频软件
直播软件
语音同一性
声学特征
可比性
WeChat
short video software
live streaming software
speech homogeneity
acoustic characteristics
comparability
