Vision, hearing, taste, smell and touch, the complex and exquisite sensory system is the bridge between us and the outside world. It is the starting point for all sadness and happiness, happiness and sorrow. The apple on the table, we know its existence and truth, because we can see it, smell it, and pick it up. However, the sense of feelings of the five senses is very limited. If human beings want to pull all the distant distances to "between feet", it may be necessary to see how far virtual reality technology will develop.
Virtual reality also has a name for the mouth, called "Spiritual Technology." It has been nurtured since the 1970s and is now maturing. The virtual reality system is mainly composed of a display system, a sound system and a feedback system. By simulating the stimulation and input of human senses in the external world, the purpose of "to confuse the truth" is achieved.
The display system is not a display that we use every day, but a large helmet. The helmet has a binocular display module to create a three-dimensional visual effect. The principle is similar to that of a three-dimensional movie, but the technical difficulty is extremely high because of the cinema screen. It is "dead", but the helmet will follow the head. If you turn your head, the picture in front of you is the same, is it not very fake? In order to solve this problem, the virtual reality helmet often has a high-precision and high-response positioning and orientation gyroscope, and is equipped with a high-speed three-dimensional scene calculation system to seamlessly integrate the head activity and the front view.
Let me talk about the sound system. In the development of virtual reality technology, the sound system was once subjected to cold reception. The technicians thought that human beings were not sensitive to sound, and the poor sound system was not so easy to “wearâ€. But in fact, the human nervous system is extremely sensitive to sound and sound field. The slight difference in sound quality and timbre makes us feel unnatural. This is why listening to live concerts and listening to music on headphones is always different. The modern virtual reality sound system relies on advanced digital signal processing technology and sounding device manufacturing technology to restore the details of positioning, tone and sound field. Some headphones even have their own "warm spray" system, which simulates the tidal moisture in the mouth when it is whispered, which is amazing.
Then there is the feedback system, which contains a very high level of technology, which has only slowly developed in recent years. Suppose we put on a virtual reality helmet and simulate walking into a room. No matter whether it is visual or sound, we find that there is a glass of water on the table, reaching for it, but the hand is passing through the cup. Yes, I have a play. The feedback system is also the result of this, the main function is to produce "entity feedback" similar to touch, taste, smell, etc.: put on the "feedback gloves" and then take the cup, the gloves will be produced in the moment of contact with the "cup" Skin pressure, authenticity is self-evident. With the maturity of this technology, I believe that after a few years, it is no longer a dream to “crowd†with lovers on the other side of the ocean.
With the development of virtual reality systems, more and more applications have surfaced. Medical students can practice surgery on virtual patients by wearing helmets and special gloves. Paratroopers don’t have to risk their lives to practice skydiving. Wear helmets to learn various skills in the blower room. Interior design is also You don't have to talk about it on paper. You can feel full of dissatisfaction when you wear a helmet at home. Of course, the reality that virtual reality brings us is real, but it is just "virtual." After the addiction in the illusion, people have to go back to reality and be down to earth.
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