声纹鉴定及其在侦查破案中的作用

随着科学技术的发展，利用手机、座机等现代通讯设备进行敲诈、勒索、恐吓、绑架、性骚扰等案件越来越多。声纹是通过声谱仪对语音纹理的描录，声纹鉴定是指通过声谱仪对未知人语音材料与已知人语音材料的语音学特征进行检测、比对和综合分析，以作出是否同一的判断过程。它能为确定案件性质、提供破案线索、印证其他证据、话者同一认定起到重要或决定性作用。

The Voice Print Appraisal and Affects in Case investigation

Along with the science and technology development,using modern communication equipment such as the handset,fixed telephone to extort, threat,kidnap,sexually harass become more and more serious.The voice print is to trace the record through the spectrograph to the pronunciation texture,the voice print appraisal is to through the spectrograph carry on the examination to the unknown person pronunciation material and the known person pronunciation material phonetics characteristic,compare and generally analyze to make judgment of whether they are identical.It plays a vital role in determination of case nature,providing the investigation clue,verifying the identical recognition of other evidence and the speech.