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美国联邦调查局声明,通过极端组织“伊斯兰国”公布的美国和英国人质遇害录像已经分析出其中的刽子手身份。解读极端组织斩首人质刽子手录像带工作主要由美国联邦调查局行动处、科技处、情报处特工负责。美国情报界有着强大的图像和声音分析能力,他们分工非常明确。中情局有专门的声音分析机构,能根据频率和音调的不同,从数十万种混杂的声音中准确分辨出某个人的声音。
The FBI has stated that the identity of the executioner has been analyzed by video footage of the death of the U.S. and British hostages published by the extremist organization Islamic State. Interpretation of the extremist organization beheaded hostage tape video work mainly by the FBI Operations Division, Science and Technology Services, intelligence agents responsible. The United States intelligence community has a strong image and sound analysis capabilities, and their division of labor is very clear. The CIA has a dedicated voice analysis agency that can accurately distinguish a person’s voice from hundreds of thousands of mixed voices based on frequency and pitch.