1, recording integrity test, that is, whether the recording has started, ended, deleted, added, tampered, etc. It is the content that must be tested when recording materials are used as evidence. The inspection of audio clips is a problem that often needs to be solved in design work. With the help of TS-VPR voiceprint instrument, the editing points in the recording can be found.

2. Identity recognition: the voice in the recognition recording is authenticated by using the voiceprint data of the person to be recognized, and the identity recognition is completed. Identity recognition refers to the process of comprehensively analyzing and comparing the acoustic characteristics of unknown or uncertain speakers with those of known speakers, and making the same conclusion. The unknown speaker or uncertain speaker is usually the person involved, whose identity is unknown or uncertain at the initial stage of investigation, and the known speaker refers to the suspect or the designated person, and whether they are the same or not can be determined by comparing their acoustic characteristics.

3. Speech noise reduction: In actual situation, many tapes are noisy, which affects the listening and resolution of recorded content. Using the noise reduction function of TS-VPR voiceprint instrument can reduce the noise and make the recorded content more clear.

4. Weak sound enhancement: In some cases, because the recording equipment is far away from the speaker or the recording equipment is set incorrectly, it is impossible to hear the recorded content clearly. Using the voice signal enhancement function of TS-VPR voiceprint instrument, the weak and unclear voice is digitally amplified, and then it can be heard clearly.

Baidu Encyclopedia: The Main Function of Voiceprint Recognition