Combine that kind of beauty, shrimp-headed men, fairy-colored lipsticks, travel, ancient Hanfu, tea making, incense, some little milk dogs, and videos of my kid who is actually a dressed-up feminine man dancing to electronic music,

Show it to the three people in front of the surveillance.

It's not as interesting as circulating the nest to love South Vietnam, maybe it can make them quarrel again.

No one has better taste, no one has more unsightly hobbies, no one is superior or inferior.

It's just that people's joys and sorrows are not the same, and everyone thinks that others are noisy.

This may be one of the reasons why short videos have poor reviews.

The video fast-forwarded again. This time, the picture did not remain unchanged like a photo like before. The characters in the surveillance screen changed rapidly, and the various sounds were turned into a joke by time.

Don't worry about missing anything.

The images currently being monitored are not valuable clues to the murder, nor are they related at all.

Of course, the more important thing is that the purpose of this search and surveillance is mainly to find the video of Ruan Xing's death, identify the murderer, and the evidence that he committed the crime.

Everything else is just minor details. As long as you get this core, you can go back and find it even if you miss something for whatever reason.

The three people who knew it well thought so.

Just as I was thinking about it, suddenly, bang, the surveillance video in front of me turned into a black screen.

It exploded instantly.

"Well..."

"What's going on?"

"Is there a power outage?"

"No, the time in the surveillance video is still there, it's just that the screen is black."

In the corner of the black screen, the numbers representing the recording time of the surveillance screen are beating like normal, 21:00:06…10…14…

There is nothing wrong with the monitoring, so there is no need to say more. Let’s go back and see what is going on.

Time 20:58:35, surveillance comes back to light.

Pause!

It can be clearly seen that the last bright moment was when Ruan Xing raised his hand and pressed the switch on the bedside to play, and the screen turned into pure black with a pop.

Moving forward, Ruan Xing put down the mobile phone that was charging aside, rubbed his eyes, stretched his waist, untied the knot that had made his body twist unconsciously with the quilt before, and then sat up from the bed.<

/p>

It’s clear what happened.

The black policeman frowned: "Is this...are you sleeping with the lights off?"

Zhang Lingjun nodded, "Obviously."

"But it's not even 9 o'clock now."

Old John couldn't help but said: "Isn't it a little too early to go to bed at this time? Normally, modern people, especially young people, usually have just gotten off work at this point and have just started their nightlife."

Zhang Lingjun said: "Ruan Xing has always had the habit of going to bed early. Although it is indeed a little early now, it is not so incomprehensible."

Old John said: "That's a little unusual. Maybe there's some reason?"

Zhang Lingjun shook his head: "Maybe he is concerned about his health and doesn't want to stay up late. Going to bed early can't be said to be wrong, and it has little connection with the murder. It doesn't make much sense to delve deeper.

"What's more important now is that so far, no problems have been found in monitoring the content.

"What we have seen before are all daily trivial matters, which are no different from the past. What is normal can no longer be normal, and we have not even found the slightest trend that may lead to danger.

"This also means that the clues to the murderer, the video of Ruan Xing's death should be in the next time period, but now because Ruan Xing has fallen asleep and turned off the lights, there is no light in the room, so the surveillance video has become

Without audio, it will be more difficult for us to obtain effective clues to the murder from surveillance than before."

The black policeman shook his head and said: "Judging from the traces we found at the murder scene, there must have been a lot of movement when the deceased died.

"Therefore, it is unlikely that the monitoring will remain dark all the time, and then the lights may turn on again for some reason and return to normal.

"Even if there is really no picture, at least it should be able to give us some clues."

Zhang Lingjun nodded, "That's the only way it can be for now. After all, we can't just ignore it."

The black policeman asked: "You should have tools here that can process audio?"

It's only around 9 o'clock now, and I don't know how long it has been since the crime occurred. If I listen slowly with my ears, I don't know when I will hear it, and I may not be able to hear it accurately.

There is a lot of inaccuracy in things like sound.

Not to mention that most of these sleeping recordings are meaningless noise or blanks, making it impossible to monitor with concentration all the time.

If you rely solely on human effort to search for potentially useful information, you will most likely miss it.

Therefore, if you want to check the recording quickly and accurately, you generally need to use tools to analyze and organize the original audio, remove meaningless noise, and extract effective audio.

As a detective, Zhang Lingjun will definitely encounter this kind of problem, and he will definitely have the corresponding tools.

Zhang Lingjun didn't say much after hearing this, and immediately started processing the audio skillfully.

Soon, from last night when Ruan Xing fell asleep to the next morning, the recorded audio was extracted into special long or short decibel fragments that appeared in different time periods.

The first audio fragment, click to play.

"...Buzz...Crash...Bang...Hmm...Bah..."

The two policemen who were listening hard and looking forward to the side suddenly became confused. After being frozen for a moment, the black policeman couldn't help but said, "What kind of nonsense is this? What the hell? Can you tell me this?"

What is it? Are you sure we can find effective information through this kind of thing?"

Zhang Lingjun nodded: "Of course, it is not difficult to determine the sound and picture as long as the logic is sorted out.

"For example, in this section, isn't there a very clear sound of turning over and grinding teeth?"

"Are you sure?"

The black policeman still found it difficult to understand, "How the hell did you hear this?

"I can't figure out how this noise, this humming sound that is not even noise, can be connected with the behaviors you mentioned. I wonder if the sound is stuck, or if Ruan Xing really went to bed.

?

"If it's this kind of sound all the time, I guess we won't be able to hear anything useful even if a murder occurs."

Zhang Lingjun explained seriously: "The sound quality of this audio is only due to the roughness of the recording module of ordinary computers. In addition, the position of the computer is fixed on the table in the house, and it cannot be close to and synchronized with the sound source. At the same time,

The recorded sounds are a little blurry, lacking specific directional information and difficult to establish associations, so the sound quality seems to be 'noise' that is difficult for ordinary people to understand.

"But in fact, it is not noise. As long as you listen carefully, you can also hear the behaviors and actions hidden behind the 'noise'.

"In this way, combined with the logical development of turning off the lights and sleeping, it is not that difficult to hear clearly what to do.

"As for Ruan Xing really going to bed, there is no doubt about this. If you listen carefully, you can hear that she is in bed and breathing evenly.

"In addition, if a murder occurs, larger movements will inevitably carry sounds that contain more and more obvious information. Then it will be very clear, and it will not be the poor quality audio now. I dare not say that the murderer can be found by then.

There’s no problem finding some clues here.”

The black policeman paid no attention to the explanation given by Zhang Lingjun, but focused on what he said, "You said you can hear Ruan Xing's breathing clearly?"

Zhang Lingjun said, "What I can hear depends on whether the recording equipment can record it."

Old John nodded, "It's probably impossible to record the sound of breathing, or are you saying that the breathing you hear is the kind of loud breathing, like the kind of violent breathing caused by exercise? Huh...huh... this is also

Breathe, she's snoring."

Zhang Lingjun shook his head: "I mean her head is relatively close to the computer microphone on the bedside table...
Chapter completed!