Lu Chao said modestly: "Chairman, it is mainly your credit. ”

After speaking, he explained: "The most difficult thing about a technology is the experimental period of finding the path, which requires dozens, hundreds, or even thousands of tests, and constantly groping to find the right method and path, which is the most labor-intensive and resource-intensive exploration from scratch." ”

"But you have already told me the principle of photoelectric conversion technology and pulse technology last time, according to the direction you said, we quickly found the right research and development path, and the company also continues to tap scientific research talents to join, regardless of the cost of investing resources, so we can produce results so quickly. ”

Xia Yu suddenly understood.

It seems that the hanging he opened was used by Lu Chao.

But this also reflects Lu Chao's strong ability, knowing the principle is one thing, and being able to develop it from scratch is another.

"Dr. Lu, you don't have to be modest, you and your team have a huge credit for being able to develop it so quickly!"

He said to Huo Jianning when he landed in front of Lu Chao: "Jianning, these must be remembered, at the end of the year, Dr. Lu and his team should be rewarded, don't be stingy." ”

"Okay, Chairman!"

Huo Jianning responded obediently.

Lu Chao had a knowing smile on his face, although he didn't love money, he also knew that the other members of the team needed money to live, and the chairman could pay attention to this, which made him feel very comfortable.

When you are in a good mood, your motivation for work will naturally be high.

He said to Xia Yu with high interest: "Chairman, please come with me, the CD Walkman is in another laboratory." ”

......

Soon, everyone was in the CD Walkman's lab.

This time, without Xia Yu saying, Lu Chao directly took out the sample of the CD Walkman, and also took out a CD disc that was packed in a box.

The CD Walkman is different from ordinary walkmanship, the most intuitive thing is the shape, he is a smaller thickness, a box with similar length and width, and a round lid on the surface that almost touches both sides, Xia Yu knew at a glance that it was a CD disc.

Sure enough, Lu Chao made a demonstration while making an introduction.

He pressed a button, and the round cover on the CD Walkman popped up, and he introduced: "Chairman, the playback principle of this CD Walkman is the same, you only need to put the CD disc in it, change the lid and press the play button to play music." ”

"This disc has been burned into the song, and I personally think the sound quality of the song is better than that of vinyl. ”

After speaking, Lu Chao put the CD record in, then pressed the play button, picked up the headphones and handed them to Xia Yu.

Xia Yu took it and stuffed it into his ears, and listened with his eyes closed.

After a minute, he took off his headphones and said with some satisfaction, "Yes, the sound quality is clearer than that of vinyl." ”

At this time, Lu Chao poured cold water and said: "Chairman, you and I both think that the sound quality of CD records is better, but we have done tests before, vinyl records and CD records the same song, but after playing, a small number of people think that the sound of CD records is distorted and not as real as vinyl records." ”

I've already done a comparison test!

This argument has already appeared since it was developed!

He remembers that in his previous life, the music industry and listeners had quarreled about the sound reduction and distortion of CD records and vinyl records.

I don't know what Lu Chao's point of view is for this scientific researcher in the blink of an eye?

He asked with a little curiosity, "Dr. Lu, do you think CD records are more distorted than vinyl records?"

Lu Chao shook his head without hesitation and said, "Of course not, I think CD records are more fidelity!"

Without waiting for Xia Yu to ask, he directly stated the basis of his opinion.

"Chairman, I am making a dialectical comparison from a scientific point of view. ”

"In fact, as long as you understand the difference between the way CD records and vinyl records are burned, you can make a clear and positive judgment. ”

"Vinyl is produced by the sound electrical signal - mechanical signal platter pattern, this process seems to have no loss, but in fact, the mechanical step of the loss is particularly large, any mechanical transmission will be affected by the environment, temperature, gravity and other aspects, the vinyl record is also played out of this problem. ”

"And the vinyl master tape is definitely the least loss, if you want to copy and burn again, it can only be that the loss is getting bigger and bigger. Consumers can only get a copy burner instead of a master tape. ”

"CD is generated by recording digital signals through digital sampling, and there is indeed a loss in the sampling process, because the sampling rate determines the audio range, but the sampling rate of CD is high enough to exceed the hearing range of the human ear, so from this point of view, the so-called 'loss' is meaningless, and the loss is the part that the human ear cannot hear. This loss can be described as "clearly marked", and the entire CD system has no other losses other than this loss. “

"Of course, there is also the loss of line equipment, but vinyl also has the same problem, so this is offset by each other. ”

"Once the analog signal enters the digitization, whether it is propagated, copied and burned is lossless, and the data on the CD disc has enough redundancy and error correction functions to ensure that the copied disk and the master tape are exactly the same. ”

"So at the same level of equipment, the sound quality of a CD record is definitely better than that of a vinyl record!"

After listening to Lu Chao's concise and clear analysis, Xia Yu suddenly understood.

If you analyze it this way, it is true that the sound quality of CD records is better.

Of course, everyone's hearing system is different, there are always people who are different, not to mention the existence of hearing illusions, which are destined to be controversial after being introduced to the market.

But a small number of people can just give up, and then slowly assimilate!

After that, he read the product manual of this CD Walkman, and learned that the model is Tiangong CD-P1 type, the body measurements are 130x140x17mm, the body weight is 290g, the headphone weight is 18g, the power supply is two dry batteries, the battery life is 8 hours, the maximum output power is 20mw+20mw, and the frequency response range is 40-22050Hz.

The upper limit of the frequency response range of the CD Walkman is almost twice that of the Vinyl Walkman!

Generally speaking, the higher the upper limit of the frequency response range, the more three-dimensional the sound will be.

That's a big selling point.

Xia Yu put down the Walkman, took out the CD disc alone, looked at it and asked, "Dr. Lu, is there any loophole in the patent of the CD disc? To what extent has Sony and Philips been researching?"

Lu Chao recalled for a while and replied in detail: "Chairman, in terms of patents, thanks to President Huo, thanks to him, we can occupy a certain advantage in technology patents. ”

Xia Yu raised his eyebrows slightly, and looked at Huo Jianning with some surprise, but saw Huo Jianning smile modestly.

Xia Yu smiled and said, "Jianning, tell me how you did it?"

Huo Jianning then said what he had done before: "In fact, I heard Dr. Lu say that in the field of CD and laser discs, there are many companies in the world that are conducting research and development, but the pioneers are Sony and Philips, which formulated the Red Book standard in 1980, but it is just a CD-DA disc standard. ”

"The CD-DA disc standard contains a lot of basic technologies for CD discs, and these patented technologies are not all occupied by Philips and Sony, but these two companies have swapped patents, and exchanged some patents with other companies in the world, and then preemptively formulated the Red Book standard, ready to become the industry's standard setter, occupy the supreme position. ”

"When the Red Book standard was first released, Sony and Philips took the lead, and there were other large companies catching up behind, so they also needed more companies to recognize the Red Book standard, fill the track in advance, and avoid other peers from forming another standard as much as possible. ”

"At that time, we had not yet released the Tiangong SP-S1 Walkman, and the relationship with Philips and Sony was not bad, so I applied in advance to join the Red Book standard, obtained the right to use the basic patented technology, and spent money to buy some patents. ”

"That's it. ”

As soon as Huo Jianning's voice fell, Lu Chao immediately said: "Combined with the technology of the Red Book standard, I have developed a CD-ROM format disc according to the guidance of the chairman. ”

"According to what I've heard, Sony and Philips are also doing related research and development, but I'm sure they haven't developed a finished product yet, and we're coming later. ”

"Because the patent was to be registered, the news that we were working on the technology inevitably leaked, triggering hostility from Sony and Philips, but it doesn't matter anymore. ”

"I see. ”

Xia Yu said softly, already clear about the whole situation.

He smiled and praised Huo Jianning: "Jianning, you have done a good job of taking precautions!"

Huo Jianning said modestly: "Thank you Chairman for your compliment, I learned from you, do things one step at a time and see three steps." ”

Xia Yu couldn't help but smile.

Huo Jianning succeeded in stealing chickens, which avoided great trouble for Tiangong Electronics and solved the problem of basic patents.

Fortunately, it is to join the Red Book standard when Tiangong Electronics is harmless to humans and animals, and buy patents, if this is the case, Tiangong Electronics will never buy patents, Philips and Sony will definitely block the technology with all their might, so that Tiangong Electronics has a second-generation technology, and it cannot be commercialized.

"Of course, Dr. Lu, thanks to you for developing the technology so quickly, thank you for your hard work!"

Xia Yu looked at Dr. Lu Chao again and said affirmatively.

Lu Chao replied with a humble face: "Chairman, it is my duty to research technology, otherwise I would be embarrassed to receive such a high salary from you." ”

Xia Yu smiled, didn't dwell on it anymore, but asked the last key question.

"After listening to what you said, I probably understand, that is to say, this is a finished product, can it be put on the market?"

Hearing this question, Lu Chao looked helpless and looked at Huo Jianning.

Huo Jianning looked embarrassed and said: "Chairman, there are still two questions about this CD Walkman, and I can't make up my mind, and I still need your instructions." ”

Xia Yu's eyes condensed slightly, and he bowed his head slightly: "Let's say, which two questions." ”

PS: I went out of the door, and it was more than 10:20 when I got home at night, so I can only have 3,000 words in this chapter today, and I will change it tomorrow.

n.