It's actually a very simple truth-

After Gao Yang finished speaking, Liu Jie was clear!

Those who do what they do understand these things more deeply, but the difference is only whether they are willing to do it or not.

Whether you are willing to work for your conscience or for some kind of benefit, what you get is absolutely different.

As a simple example, the Simpson wife murder case that occurred abroad and even caused a sensation in the world, and finally Simpson was acquitted, Americans will feel regretful, but most of them support this result, but the Chinese are completely unable to understand this result.

Because of this case, the evidence is conclusive!

It can be said that if it happened in China, Simpson would definitely be sentenced to death, or even executed immediately.

This is the problem of different systems.

In China, once the police believe that a person is suspicious, they can directly detain them and slowly look for evidence, but this situation does not work abroad.

In addition, in foreign countries, the police must have a search warrant to search residents' homes, otherwise even if any evidence is found, it is illegal and cannot be presented to court. Just like in the Simpson murder case, the police broke into Simpson's home without a search warrant, although the police found the murder weapon with Simpson fingerprints, and even the bloody clothes and other evidence, but because there was no such detail as a search warrant, in court, these pieces of evidence would be completely judged illegal and useless. And the illegal evidence collection by the prosecution is the most important reason for the prosecution's failure in the final case.

However, if it is in China, the police directly break into the suspect's home in an emergency and find evidence that the suspect has not had time to destroy, then it is definitely a great achievement and the key to solving the case.

That's the difference. This is actually the same concept as the previous statement of proving innocence and proving guilt.

If illegal evidence collection by the police is allowed, then who can guarantee that the police will not deliberately 'make' fake evidence to prove the suspect's guilt in order to solve the case?

Liu Jie took a deep breath and nodded at Gao Yang, "Then do you still want to detain Miss Gu?" ”

Gao Yang looked at Liu Jie, "According to the evidence we have so far, can we prove that she is suspected of committing a serious crime?" ”

Liu Jie was silent for a moment, then shook his head, "No." Although the recorded evidence is very strong, it is true that she did not have the time to commit the crime, or rather, we cannot find out when she committed the crime! ”

"So between the fact that there is no time to commit the crime, and strong audio evidence, we should rely more on which side?" Gao Yang asked.

Liu Jie gritted his teeth and was silent for a moment before saying, "The former." ”

Gao Yang nodded, didn't say anything more, and turned to leave.

Liu Jie sighed helplessly, although he was very unwilling, he had to release Gu Yi'an, and there was no reason to detain her!

After learning that Gu Yi'an was going to be released, Jin Yan looked at Liu Jie in surprise.

"How can it be released? Didn't you say that the voiceprint identification results have come out? Sure that the voice in the recording is Gu Yi'an, isn't this still evidence? Jin Yan couldn't understand.

Liu Jie was a little helpless, and watched Jin Yan repeat what Gao Yang had just said.

Jin Yan still frowned, "However, the evidence of this recording is so conclusive, this is the most ironclad evidence!" As for the time of the crime...... She must have another way to hide the camera surveillance, and Tan Jincheng is her husband, his alibi can't be counted! ”

Several other police officers were also incomprehensible.

"Yes, the voiceprint identification is not very accurate, as long as the results of this identification are consistent, it indicates that the recording must be the suspect himself! We should take this evidence as the basis and find out when and how the suspect committed the crime, right? Another policeman said.

"That's right, as long as the results of the voiceprint identification are correct, then what else is there to doubt, it must be her!"

"That is, even if others can imitate her voice, but the voiceprint is the only one, and no one can imitate her voiceprint!"

"That's right, that's ......"

Several policemen were discussing, and they didn't shy away at all and sat on the stool on the side, well-behaved and quiet little Grace.

At this moment, Grace suddenly spoke, her voice sweet and crunchy.

"The results of the voiceprint identification may be correct, but it does not mean that the recording must be Aunt Gu's." Grace's voice isn't big, but it's very unique.

So, when she opened her mouth, everyone looked at her.

Grace didn't have the slightest stage fright, and looked at these policemen very calmly and seriously: "Voiceprint identification is to draw a voiceprint atlas through guò, and then compare the characteristics of the same words and sentences, such as the resonance frequency and direction and 'wave' shape, to determine whether the two are consistent and whether they come from the same person." ”

Such words, which even half normal adults may not understand, come out of the mouth of such a little girl, and it is really as weird as it gets.

Grace didn't pay attention to those people's surprised gazes, she continued: "But for example, as long as you have a large number of voice samples from Aunt Gu, you can draw a very detailed voiceprint map for Aunt Gu. Then use this voiceprint spectrum, after adjustment, you can imitate the same voice as Aunt Gu, and this imitation not only imitates the volume of the sound, but also imitates the voiceprint information. So even if you compare, you will only think that the voiceprint spectrum of these two sound samples is the same! But in fact, one of them was made by someone else, not really what Aunt Gu said! ”

After saying this, Grace seemed to be a little tired, took a breath, and then said: "Not only that, your voiceprint identification and comparison must only be based on the results of the comparison of those characteristics with strong 'sex', but in fact, those characteristics with weak 'sex' are also very important." The characteristics of strong 'sex' are also easy to compare, but this also means that they are easy to be detected, drawn and imitated, while the characteristics of 'sex' are weak means that the changes are big and difficult to capture, and of course it means that it is difficult to be imitated! Therefore, it is also very important to compare the characteristics of the weak 'sex' if the stability is dìng. ”

After saying so many words in one breath, Grace immediately began to gasp for air.

And Liu Jie, Jin Yan, and the other policemen present were all dumbfounded, looking at the ...... in disbelief This doll is less than half their height!

・・・

Maybe you think that the beginning of this chapter is a little water.,But Qinghu really didn't deliberately make up the number of words.,Qinghu's book is not a romance novel in the general sense.,I want to write something that can make everyone think.,**** Of course it's important.,But it can't be all.。

We hate criminals in our lives and would rather kill by mistake than let a criminal go, but we are indignant because of criminals and want to let criminals die, but how innocent is that innocent person? Who can be held accountable for his innocence?

Recently, a lot of unjust, false and wrongful cases have been revealed, so Qinghu has a little more emotion and nonsense, don't blame it.