Voiceprint

声纹

A display of a person’s voice based upon a spectrographic or similar output. The analogy is with the term ‘fingerprint’, and the claim is sometimes made that a person’s voice is as individual fingerprints. Several legal cases have in fact used voiceprints as evidence of speaker identification. But, while there are several idiosyncratic features in a spectrogram of a person’s voice, it is not the case that such displays are always unequivocal indications of identity. It is difficult to visually compare and interpret sets of spectrographic features, and the limitations of the display techniques used must always be borne in mind.

依靠频谱仪和类似仪器的输出来显示的个人的嗓音；系仿照“指纹”一语而来。有人认为每个人的嗓音和指纹一样都不同于其他人；有一些司法案件也确实用声纹来作说话人认同的证据。但是，个人嗓音的频谱仪图虽然有一些与众不同的特征，并不总能确定无疑地识别一个人的身份。靠视觉很难比较和解释一组组频谱仪图特征，因此必须随时提醒这种显示技术的局限性。