Material Empire

In the living room of Qiao Zihe's house, there was indeed a set of sound equipment that looked very complicated. There are record players, tape players, power amplifiers, and seven or eight speakers of different sizes, which are placed in every corner of the living room. The nameplates of these devices are all written in foreign languages, or English, or Japanese, and it is obvious at a glance that they are expensive imported products.

Qiao Zihe pulled Gao Linqi to the front of the power amplifier, chatted to him, and the two of them turned on the stereo and listened for a few minutes. Gao Linqi nodded repeatedly, Qiao Zihe smiled with satisfaction, and turned to Qin Ling He beckoned and said, Student Qin Ling, let's go to the piano room.

After finishing speaking, he nodded to Qin Hai and Peng Tingting again, and said: Then please wait patiently in the living room for a while.

Qin Hai and Peng Tingting naturally had no objections, after all, the old man was teaching Qin Ling. After Qiao Zihe and Qin Ling entered the piano room and closed the door, Gao Linqi disassembled the large power amplifier, took the multimeter that he brought with him, and began to measure something, muttering in his mouth.

Feeling bored, Peng Tingting leaned forward to watch Gao Lin Qixiu's power amplifier, and asked, Hey, Xiao Gao, what did Professor Qiao tell you just now?

Gao Linqi glanced at her and said, Didn't you hear that just now?

Peng Tingting said: I don't understand what you're talking about. What do you mean by low frequency, sense, overtone?

Gao Linqi rolled her eyes and said, You don't understand music, so it's useless to tell you about it.

Gao Linqi, if you dare to talk to me like this, you are not afraid that I will tell Xiaohong! Peng Tingting raised her eyes, guessing that Xiaohong should be Gao Linqi's goddess and Peng Tingting's best friend, and she can be taken out at any time. A big killer.

Sure enough, Gao Linqi's attitude softened. He turned on the recorder, played a short piece of piano music by someone unknown, and asked Peng Tingting, Listen carefully, what do you think of the sound?

Peng Tingting turned her ears sideways, listening to the stereo sound from seven or eight speakers in the whole living room, she kept nodding her head and said: Well, it sounds good. This stereo sound is better than the four speakers in our house.

Gao Linqi said: Didn't you hear that the high-pitched part is a bit inelastic? The resolution is not shown.

Elasticity? Peng Tingting's eyes widened, How can the voice be elastic?

Gao Linqi's eyes were rounder than Peng Tingting's, almost protruding. He scolded: How can the voice be inelastic? Listen to this passage again, it is more warm, and you can feel the elasticity. ?

Qin Hai was sitting next to him and flipping through the magazines of Qiao Zihe's family. When he heard the conversation between the two, he found it interesting, so he said with a smile, Xiao Gao, you are a hard man. You are an audiophile. I and Not Tingting, how can you have such good ears.

Gao Linqi was a little embarrassed when he saw Qin Hai interjecting. He said with a sneer: Boss Qin is right, we audiophiles are really hopeless. If you are not used to good speakers, then don't listen to them. After you get used to them , You can’t listen to any music anymore, you think it’s all noise.”

I heard that the top audiophiles even pay attention to what kind of electricity they use to play music. Qin Hai remembered an Internet joke in later generations, and laughed at Gao Linqi.

Gao Linqi was an honest boy. He didn't understand what Qin Hai meant, so he asked obediently, I really don't understand what Mr. Qin said. What does it mean to use electricity?

For example, the sound of thermal power is warmer, and the sound of small electric power is colder, but the resolution is high. Among the thermal power, the sound quality of Beilun Power Plant is the best, because it burns anthracite. Qin Hai said.

No way... Gao Linqi thought about it seriously for ten seconds, and when he saw the smile on Qin Hai's face, he couldn't help but suddenly realized, and said with a smile, Boss Qin is joking with me, and I take it seriously.

Qin Haidao: Then what do you mean by the elasticity of the voice, how do you understand it?

Gao Linqi said: This can only be said to be the feeling of the ears, which is indescribable. However, Mr. Qin, you should know that the sound of a wooden speaker is completely different from that of a plastic speaker. The sound reproduction of the speaker is good, especially the bass effect, which is incomparable to the plastic speaker, don’t you admit it?”

This statement is within the scope of Qin Hai's knowledge. People with a little appreciation ability can also hear the difference between plastic speakers and wooden speakers. He nodded and said, I know that. Doesn't the effect of different woods have the same effect?

Of course. Gao Linqi seemed to have found a bosom friend, and said: Audios are really too particular. The material used for the speaker and the material for the diaphragm of the speaker will affect the sound quality. And this audio The wires, have you seen that, they are all silver wires, the signals transmitted by ordinary copper wires will be distorted, of course you can’t hear it, but we people can hear it when we hear it.”

Hearing the word materials, Qin Hai thought for a moment. He pointed to the equipment in the room and asked, Xiao Gao, the speakers in this room are probably not cheap, right?

That's for sure. Gao Linqi said: We people usually say that if we want to harm someone, let him play with the stereo. High-end stereo is a bottomless pit, and how much money you have is not enough to fill it in. Mr. Qin, you Look at this speaker, imported from Japan, guess how much it costs?

Qin Hai and Peng Tingting looked at Gao Linqi's finger at the same time, and saw that he was pointing at a small, unremarkable speaker, about half the size of a brick. Qin Hai knew that since Gao Linqi asked this question, he must have an astonishing answer, so he didn't dare to answer right away. Peng Tingting was a bit eager to break the jar, and she opened her mouth and said, Such a small speaker, can it cost 200 yuan?

President Qin, what do you think? Gao Linqi asked Qin Hai.

Qin Hai shook his head and said, I can't guess, but I think it might be more than 200 yuan?

Multiply by 20, a total of 4,000 yuan, which was obtained through a relationship. Gao Linqi said proudly.

4,000 yuan! Oops... tsk tsk, just such a small thing... Peng Tingting yelled like being stepped on, shaking her head. The monthly salary of an associate professor back then was just over 100 yuan. Such a small speaker costs 4,000 yuan, which is really unacceptable.

Qin Hai was also a little surprised, but at least he was a person who had seen the world, and he knew that the value of some things in this world couldn't be judged from the outside. He asked Gao Linqi: Xiao Gao, how can such a speaker be so expensive? What is it expensive?

There are too many things. Seeing that Qin Hai and Peng Tingting were both shocked by him, Gao Linqi couldn't help but feel complacent, pointing to the speaker and saying, The speaker in this speaker is the latest product from Japan. The diaphragm it uses is not the metal diaphragm used on ordinary speakers, nor is it an ordinary PP plastic diaphragm. It is a new material called Texc. This material has low density, good rigidity, and suitable damping. It is just such a small piece. The diaphragm is worth thousands of dollars.

Is this kind of diaphragm made in China? Qin Hai asked.

Made in China? Gao Linqi curled his lips as if he had eaten a bitter gourd, How can there be domestically produced materials? Nowadays, there are no domestic materials for high-end audio, they are all imported from abroad, okay?

Why can't domestic materials work? Qin Hai grasped Gao Linqi's words and delved deeper.

Gao Linqi said: How do I know? I can't listen to speakers with domestic diaphragms anyway. I can hear them as soon as I listen to imported diaphragms. You get what you pay for. There is a reason why they are expensive.

Qin Haidao: Xiao Gao, you just said that the diaphragm material requires low density, high rigidity, and moderate damping. What else is required?

There's more to this. For example, the instantaneous response speed must be fast, and there must be no resonance at high frequencies. There are a lot of things to pay attention to. Gao Linqi is a bit good as a teacher.

Qin Hai smiled slightly and said: Xiao Gao, what you said can actually be transformed into some requirements for material design, and these requirements can be realized by properly adjusting the material formula. How about it? I'll find someone to develop a first-class vibrator Diaphragm materials, as well as speaker materials, hire you as an appraiser, you just need to tell us whether this material works, which material works best. We will work together to create a world-class domestic diaphragm, are you interested?

You? Gao Linqi frowned, feeling that Qin Hai was a little overwhelmed. In his opinion, domestic companies can produce international second- and third-rate diaphragm materials, which is not bad, and what is the world-class one? Is it possible for anyone to make world-class things?

Peng Tingting was firmly on the boss's side at this time. She knocked on Gao Linqi's head and said, Xiao Gao, you can look down on me, but you can't look down on me, Mr. Qin. Do you know that the thermal sprayer designed by our Mr. Qin , and ceramic knives, all of which are world-class, and foreigners come to place orders. We, Mr. Qin, say that we can make things, and we will definitely be able to make them.

What is the thermal sprayer for? Gao Linqi asked.

Qin Haidao: It's not something extraordinary, it's just used to paint the surface of the machine.

Oh, spray paint... Gao Linqi responded with some disdain.

Qin Hai continued: However, our thermal spraying machine is the first in the world, so it has entered the international market. Last year, the sales were not very good, and the total sales were more than 200 million US dollars.

Two... billion! Gao Linqi was so frightened that he almost fell over. As an audiophile, he has met many rich people, and people with a net worth of millions or tens of millions are quite respectful to him. , because he was able to fix the stereo in these people's homes. But when he first heard a number like hundreds of millions, and the corresponding value was US dollars, his self-confidence finally collapsed.

Qin...President Qin, is what you said true? Gao Linqi asked.

What did you say? Qin Hai asked back.

Gao Linqi originally wanted to ask whether the so-called more than 200 million U.S. dollars was true, but he changed his words and said, Is it true what you just said about making world-class diaphragm materials?

Shoulder hurts, let's post an update first, and try to make up the next day.