Chapter 18 Section VIII

The one in the photo is a silver square box like an old tape recorder. There is a thick wire on the box, and a machine like a digital camera is attached to the end of the wire. "The method of use is very simple. Store the sound data in the machine, then adjust the volume, point the illuminator at the head of the target person, and just press the switch. Only the target person can hear the pre-stored sound." Tang Chuan stood explained. Kusanagi raised his head after seeing the photo, "Can't the others hear it?" Tang Chuan nodded, "Absolutely can't hear it."

"It's true." Kaoru Utsumi said affirmatively, "I also participated in the experiment, even people who are very close to the target person can't hear it at all, but if I am the target, the voice seems to be whirling in my mind I can hear it very clearly, but the people next to me can't hear anything, it's really unbelievable!" "The results of various experiments show that the distance can reach up to 20 meters. It is estimated that Xiaozhong put the machine in his bag and put it at his feet, taking care not to let people see the wires, and pointed the irradiator at the target person."

"If you do this, won't you be discovered?" "We conducted a trial of recreating the crime scene in the office of the small and medium-sized people, and surprisingly found that it is really difficult for people to find." Kaoru Utsumi said, "Although it can be seen from the photos, the illuminator is very small, and it will only appear at first glance. If you treat it as a digital camera or something, if you fiddle with it in your seat, no one will notice it in this day and age.” Kusanagi shook his head lightly, looked up at Yukawa, "Then what is the working principle? What does the illuminator irradiate?"

"Simply speaking, it is electromagnetic waves. The general sound is formed by waves in the air and transmitted to the eardrum in the human ear. This device uses electromagnetic waves to transmit sound." "Electromagnetic waves... can it still be like this?" "The pulse formed by electromagnetic waves and sound is used to irradiate the human head, and it will interact with the human brain, and the human will hear the sound. This is called. The feeling that there is a sound echoing in the head that Mr. Utsumi said just now is not a metaphor, it is indeed That's right. Although this is a known phenomenon, it's the first time I've seen a practical machine, and it's surprisingly small. I heard that the maker is the brother of the suspect, and he was selected to a research institution in the United States. went."

Kusanagi sighed and put down the photo, "There are still many things in the world that we don't understand." "Isn't it a reward to know?" Tang Chuan picked up the photo and put it in the pocket inside the jacket. "Did you know then?" "I heard from Gasan that using earplugs is useless. I think it is likely to be a kind of electromagnetic wave, so I asked Utsumi-kun and the others to investigate the situation of Gasan's auditory hallucinations in detail. Gasan's sudden madness during the project meeting caught my attention. Fortunately, the company keeps a record of the attendance of the meeting attendees. If you want to operate the machine without arousing suspicion from others, you must sit in the last row. The records show that only Xiaozhong Xingxiu sits in the last row. Another point , The hospital has a security video of you being stabbed. After watching it carefully, there is a person who looks like Xiaozhong, and is holding a big bag. The results of Utsumi Jun’s investigation show that Xiaozhong asked for leave that day and did not go to work, so I think He is the only one who uses electromagnetic waves to create auditory hallucinations."

"So that's it! As always, it makes sense!" "However, it is impossible to identify the suspect. In order to prove my point, I can only expect the suspect to commit another crime. If there is no auditory hallucination, we have nothing to do." "At this time, we investigated the situation of the office staff and found a female employee with tinnitus symptoms." Kusanagi turned to look at Kaoru Utsumi, "Nice job!" "It's not my fault alone. Without the help of Mr. Beiyuan, I think it would have been very difficult." Kusanagi nodded and looked up at Yukawa again, "But I still don't understand what that female employee heard because of her tinnitus. I heard that she could only hear sounds like chanting spells. It is the same as Hayami and Kashan. It’s different hearing someone talk, what the hell is this? Did the suspect do something wrong?”

"No, that was on purpose." "on purpose?" Yukawa pulled the bag beside him, and took out the iPod with a small amplifier from it. "This is the voice that Ms. Wakisaka Mutsumi heard." Yu Chuan pressed the button, and an unpleasant low voice came from the loudspeaker, which sounded creepy. Kusanagi made a bitter face, "What is this! Isn't it annoying to hear this?" "I thought so too at first, but after listening to it a few times, I noticed that there was a certain repetition. After analyzing the sound waveform, I found that there was a sound that was covered by low-frequency noise. After removing the noise and adjusting the frequency, it was this."

While talking, Tang Chuan adjusted the buttons of the iPod again, and a man's voice came out from the loudspeaker - "You love Xiao Naka Yuki, you love Xiao Naka Yuki." "What's the matter?" Kusanagi couldn't help raising his voice. Tang Chuan closed the iPod with a smile, "You heard that right, 'You love Xiao Naka Yukihide' was repeated, I guess this is what Xiao Naka Yukihide himself said." "Why do you want the other party to listen to this?" "I don't know, I don't know if I don't ask myself, but I can speculate."

"What is it?" "This is a kind of subconscious consciousness. Letting the other party listen to low-frequency sounds can make the other party have a subconscious subconsciousness." "Huh?" Kusanagi opened his mouth wide in surprise. "Because Xiaozhong likes that female colleague, so in order to make her like him... What a despicable guy." "It's really despicable, and it's also very naive. Ms. Wakisaka suffered from tinnitus for more than three months, but she didn't notice Xiaozhong because of it." "Have you told Bei Yuan?"

"Yes," Kaoru Utsumi replied, "Before coming here, I gave Mr. Kitahara a copy of the voice." "So," Kusanagi was about to ask, "What will that guy say?" when he saw a text message, "Let me check my phone." After he apologized to the two of them, he looked at the content of the text message on his phone, and it really said "Cao Cao Cao Cao is here", it was from Beiyuan.The title is "Done" and the content is as follows: Kusanagi couldn't help smiling and closed the message. "What's the matter, so happy?" Kaoru Utsumi asked.

"It must have been sent by the bar girl in Ginza!" Tang Chuan joked solemnly, "They said they wanted to visit or something in person." "Hey! You really know me!" "Sure enough, look at his expression! Utsumi-kun, hurry up! It's inconvenient to have you around!" "Yes! Mr. Kusanagi, take care!" "I'm out of the hospital, please drink!" The two deliberately made a lot of noise and left the ward. Kusanagi was lying on the bed, thinking about the message from Bei Yuan, he said that I "borrowed others' light"? Although he didn't understand what he meant, what Kusanagi thought silently was "it's not easy to get along with those two people"!

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