Chapter 425: Forensic Science

According to Tan Xiaopei, the best strategy is naturally to come up with enough evidence and then have a showdown with the Wang family and those related figures inside and outside the government and the opposition, so that the other party has no way to refute, calmly withdraw from all conspiracy outlines, and let things settle down invisibly. In this way, everyone looks better, and at least on the surface, Dongping still maintains the tradition of no party competition for succession, at least, it can also make Tan Weiming's family not suffer too much impact. And if this doesn't work, Tan Xiaopei and Nie Rui also have a backhand, and they are ready to use a series of measures to lure and guide each other to take some radical actions. As long as such an action takes shape, with the full preparation of the current Intelligence Bureau, the Forbidden Army, and the brothers Tan Weiming and Tan Weiran, it is natural that the matter can be controlled in a short period of time, and enough evidence of guilt can be collected for further disposal. It's just that in this way, the impact on the DPRK will be greater.

Collecting evidence is really not what the Intelligence Bureau is good at. Nie Rui's intelligence bureau, because of Tan Weixin and Ye Tao's suggestions, does have such a technical section. Over the years, this technical section has provided a variety of very convenient tools for intelligence officers working in the front line, packaging many useful weapons, tools, medicines, poisons, and other things, so that intelligence officers can bring what they want to carry into any place and carry out various tasks. These people in the Technical Section of the Intelligence Bureau are most specialized in poisons and assassination tools, and in terms of field equipment, scout equipment, and observation equipment, the Technical Section has always relied on Ye's Workshop. Since Ye's Workshop has been studying all kinds of scout equipment, it can be equipped for intelligence officers with a slight improvement. In the forensic sciences, the technical section is very weak. If there is one thing that is more effective, it is the study of handwriting, paper and ink in the technical department. In the materials room of the technical department, almost all kinds of paper and ink are collected from all over the world, and there are many masters who are skilled in this field who are studying the various characteristics of paper and ink, and in terms of handwriting comparison, the technical department relies on its strong network of contacts, and there are many calligraphers who are willing to cooperate with them, and they are often secretly invited to a certain room of the intelligence bureau to assist in the comparison. And under the influence of these calligraphy masters, under the more professional training of the Intelligence Bureau, the Intelligence Bureau's own writing experts are about to take shape. These people are even more terrible than the master calligraphers, who can only infer from the characteristics of their handwriting whether it was written by a single person, but these intelligence bureau writing experts can simulate the handwriting of almost everyone. In order to test the ability of these special talents, Tan Xiaopei even asked a writing expert to write holy decrees and some other things in his own handwriting, and sent them to the ministers close to him...... As a result, among the fourteen documents in three days, only Huang Xuping recognized the impersonated handwriting. But Huang Xuping himself is a master of painting and calligraphy, and he has a certain understanding of this subtle thing. None of the others recognized it as ghostwriting.

However, the intelligence agency's research in other forensic sciences has been lackluster. The invention and development of photographic technology has given the Intelligence Bureau more powerful tools in many operations, but at best, it has trained some portrait artists with drawing techniques such as sketching and sketching, and established a preliminary reconnaissance and comparison system for intelligence officers from various countries. Otherwise, it's a blank slate. In Ye Tao's mind, the most amazing thing in forensic science is not these contents. Whether it is handwriting or face, it is only the foundation of the foundation, and you can only know whether it is this person and who this person is, but you can't understand what this person has done. The magic trace technology can do this, and can provide intelligence officers and criminal investigators with more basis for thinking and reasoning. The identification and comparison of fibers, hairs, particles, etc., are all part of this mysterious trace science, and these are all professionals who need a huge database accumulation, long-term data collection, and long-term professional training with a solid professional foundation and a keen mind. Ye Tao and Tan Weixin spent three full days dictating and summarizing a book of 150,000 words, describing the science of forensics, including trace science, and even fingerprint comparison. Ye Tao even easily came up with a set of tools to collect fingerprints. This thing arrived in Nie Rui's hands, making Nie Rui and the people around him almost forget the most important thing in their hands for a short time. There is no shortage of criminal investigators in the intelligence bureau who are drawn from various yamen, who can piece together the details of the case and find the real culprit, but no one has ever been able to classify such a huge and complex system to such a subtle level. And fingerprint comparison is something that everyone has never thought of, and some of Nie Rui's staff members insist that fingerprints alone, if they can be put into practice, can at least increase the detection rate of ordinary criminal cases by three percent. You must know that the set of tools given by Ye Tao can not only extract fingerprints from smooth surfaces, but even include some tools for extracting fingerprints on complex surfaces. Ye Tao and Tan Weixin realized all the knowledge they learned from watching the series of American dramas "Crime Scene Investigation" back then. He couldn't do anything about computer comparison, but the evaporation and adsorption of glue particles to present fingerprints on complex surfaces was simple.

Ye Tao naturally knows that even if these things are deployed from now on, if they can be put into practice, they should not even think about it in a few years. This time, it was only so that the Intelligence Bureau could start training a group of talents and let them get the initial internship opportunities. This time, the main focus will be the recording technology that has just come out.

Recording technology has been developed in Yip's Workshop Research Institute for several generations, and now, it has finally performed better in terms of reliability, ease of use, and so on. The earliest recording technology is the dense wax cylinder, although the level of Yip's workshop in precision parts has reached a considerable height, but after all, it is not good to solve the defects of the material itself. The sound receiver of the tape recorder uses a paper cone, which does not involve the circuit at all, but relies on an extremely slender probe to convey the sound vibration sensed by the paper cone to a control box, amplifying a little bit of dynamics, and depicting this dynamic on the densely textured wax cylinder rotating at a uniform speed. Although this kind of thing can almost be called a show of precision machining technology, in terms of recording effect, it is miserable. When the recorded sound is played back, it is blurry, disturbed by noise, or the sound cannot work normally if the strength of the sound fluctuates greatly, and it will leave a string of screaming sounds on the wax cylinder. In addition, the life of the densely textured wax cylinder is very short, and it is not possible to play it back a few times, which also greatly reduces the practicality of this technology.

The second generation of recording technology is much better, and the researchers of the Electrical Workshop of the Research Institute have discovered the IP effect of sound and developed the first generation of mixed mineral sand sound probe, which has been very good. The captured sound is amplified and then firmly engraved on the bakelite master. But there is a big problem with this second-generation recording technology, that is, the sound signal is amplified in this part of the machine, and the distortion is very great. But after all, through this second-generation technology, the workshop already has a basic idea, with the material of the master, with the sound probe technology, and even developed the technology of copying with the master. Although the copied disk is always a little different from the master disk when it is played, the quality has become more and more stable and reliable.

At this time, Ye Tao decisively and directly intervened in the research. For the sound probe, Ye Tao has nothing to change, this sound probe may be a little larger, and the most exquisite prototype is also the size of a microphone, but it is completely usable, and the accuracy is also very surprising. Ye Tao understood that the bottleneck of the recording equipment this time was that the researchers did not have the knowledge and experience of circuit design. Ye Tao, on the other hand, directly guided the basic transistor manufacturing, developed the first and second generation of transistors, and began to popularize the knowledge of circuit design. The third generation of recording equipment was born. Although there have been slight improvements in sound acquisition and mastering technology, in general, the third generation of tape recorders and the second generation have evolved and developed, but in the middle part, there have been earth-shaking changes.

The sound is captured and turned into a telegraph, and then it is transmitted to the mechanism engraved by the master plate after two layers of filtering and three-pole amplification. Although such a tape recorder is a little larger and has to accommodate a lot of transistors, the design idea is very mature. The recorded voice is only slightly distorted, but the speaker can already be distinguished, and the specific type can also be distinguished by the recorded animal voice, which has full practical value. After the design idea matured, the research institutes in the workshop were dumbfounded and quickly made various improvements. With the maturity of the production process of transistors and the reduction of the cost of volume reduction, as the research institutes designed the recording device for shock absorption and reinforcement, controlled the volume, and improved the engraving device, forming an integrated design of acquisition, processing and engraving. Today's recording device is about the size of a two-foot square box. Moreover, the probes can be pulled with wires to a distance from the recording box to install, and even the improved probes now have a little directional sound collection effect. In the era when Ye Tao and Tan Weixin came from, if such a bloated thing was used for eavesdropping, it was estimated that it would be laughed off, and roadside stalls were reluctant to sell this kind of thing. However, in this day and age, when the person being monitored is not mentally prepared, this set of things is indeed a super weapon.