The technicians all have their own arrogance. In addition, Kang Wenbin is still a student in school. He has not been baptized by social survival pressure and does not understand the compromise. He has done some serious research. This is the plan he chose to consider the best, and said firmly: "There is no way to change the plan, this is the best plan."

Liu Chen understood clearly. It was okay to let this guy fight, but it was not possible to lead the development, whether it was vision or technical strength.

Lan Jun said: "Not good, why can't we change it?"

Kang Wenbin insisted: "This is the best solution, and it is also a solution adopted by major well-known manufacturers. Sony, Samsung, and Ailihe are all like this. Can major manufacturers adopt this? "

Lan Jun felt it made sense when he heard it, but he also felt something was wrong, so he could only stare at Liu Chen, buddy, say something.

Liu Chen shook his head and said, "Samsung can develop chips by itself, and it is not a problem to customize decoding chips for himself. These large manufacturers have very standardized processes in all aspects, run fast, and have a large reserve of chips. Do you think that just one laboratory, how can you compare with a large company? The starting point is a thousand miles apart, and you can only win by surprise."

Kang Wenbin blushed when he was said and said unconvinced: "What kind of magic do you want?"

"Everything starts from reality. There is only one way for a small domestic manufacturer to enter the MP3 market to get a share of the pie, that is, low prices, and to gain a foothold, it is also necessary to ensure a certain quality."

Lan Jun slapped his thigh and said, "That's it, everything must start from reality."

"You want to run away again, but don't give me grass. Do you think this is realistic? You get what you pay for, and it has been unchanged from ancient times to the present." Kang Wenbin was dissatisfied. He did compare multiple plans and choose the best from the best.

"You did spend a lot of time collecting basic information. For us, it is most reasonable to choose the main control chip of sigmatel integrated decoding. This chip is sufficiently supplied and can be purchased everywhere. Even if you apply for trial, you can give you ten pieces at once."

Kang Wenbin sneered: "Sigmatel is synonymous with low-end main controls. There is no need for a slightly higher level MP3. You can think of it. This chip is the first to rule out."

Liu Chen smiled and said, "It doesn't matter which chip you use. In fact, few consumers will care about what main control chip you use. What everyone is pursuing is the final effect and what sound effect is."

"What sound effect can such a garbage chip have? It would be strange if someone buys it."

In fact, Kang Wenbin’s idea is that most manufacturers and developers now believe that decoding chips is the most important thing, and they are competing for chips, just chip theory.

Then, in his previous life, a brand entered the market, which changed most people's persistent view that chips completely determine sound effects, and used sigmatel chips to seal those who only talk about chips, proving that decoding chips are not the whole of performance.

Liu Chen has a deep memory of this incident. When he was thinking about the development of MP3, his first choice was sigmatel's decoding chip.

"Never draw conclusions about what you didn't do." Liu Chen said a very meticulous sentence.

Kang Wenbin snorted and said, "Sigmatel's three chips STMP3300, 3400, and 3410 all use 56K DSP structure. Although it also integrates audio DAC and headphone amplifier lines, it is compatible with a variety of audio compression formats, and can even be continuously upgraded, but it has one biggest disadvantage."

He deliberately stated each model in detail to show that he knew this knowledge in detail, which sounded very intimidating. At least Lan Jun thought that this graduate student was still very powerful, and various professional terms sounded very high-end.

After pausing for a moment, seeing Liu Chen looking at him without answering, Kang Wenbin continued: "That's why it's difficult to develop. It requires transplanting the decoding algorithm of MP3 into the DSP chip. Do you know what it means?"

Liu Chen nodded and said, "I know."

This surprised Kang Wenbin, saying: "Theoretically, the simpler the ported decoding algorithm, the better. It is not enough to implement the decoding function. Haha, if you write a large number of programs to decode, just wait for the crash."

Liu Chen certainly knows that in fact, DSP transplantation of MP3 decoding algorithm depends on the theoretical height of the algorithm.

Generally, music on CDs has the audio quality of 44.1kHz16Bits stereo. How to compress these songs basically losslessly and greatly reduce the data flow is audio signal processing, and then restore these digital signals to analog audio is the function of the decoding chip.

The higher the theoretical height of digital signal processing, the simpler the decoding algorithm written, the higher the music restoration degree. Moreover, this algorithm will take up less resources when running on DSP. If it occupies too much, it will often crash.

If the algorithm implementation is too poor, the sound quality will be too bad. In fact, if you want to use the sigmatel chip to achieve high sound quality, it is mainly to improve the decoding algorithm.

The difficulty of all this lies in the decoding algorithm.

Liu Chen is best at signal processing algorithms, so he firmly chose the sigmatel chip.

It is difficult for others. Even a professor in the mathematics department will take a lot of time and may not be able to complete it. Perhaps he can implement the function, but it is not simple enough.

Functions are simple and indispensable.

Kang Wenbin hummed, "Since you know, then when you choose this chip, either the sound quality is too bad or the machine is dead. There is no second way, and a fool will not buy such a product."

"It is also possible that the sound quality is great and it doesn't crash. Since there is a possibility, it's worth doing it."

"Then you have to do it for the rest of your life." Kang Wenbin sarcastically felt that the guy in front of him was too arrogant. He was the best graduate student in the electronics department, with the strongest hardware level and theory. He couldn't do it. What kind of old are you, and you haven't even grown all your hair.

Lan Jun believed Liu Chen a little blindly and said in surprise: "Can you make this or something you said? How long will it take to make it?"

Liu Chen stretched out three fingers and shook them.

Kang Wenbin exclaimed: "Three years? You've been talking big. If so many scientific researchers in front-line factories don't try it, you know it's not easy to do it."

It’s not that big manufacturers can’t do it, but they didn’t expect to do it. They all wanted to choose the latest decoding chips, but they didn’t think about tapping the potential of low-end chips.

Lan Jun smashed his mouth and said, "Brother, these three years have been too long, and the cucumbers and vegetables will be cold by then."

Liu Chen smiled and shook his head, "It's not three years."

Kang Wenbin said: "It's not three years, may you still want to do it for thirty years? At that time, MP3 probably no longer exists."

The association is really rich.

Lan Jun smiled excitedly and said, "Haha, it can be done in three months, right? Or you kid's awesome."

Liu Chen smiled and said, "It's not thirty years, nor three months. When I'm fine these few months, I've just studied this aspect. If the conditions are met, about three days will be enough."

Three days?!

Kang Wenbin shouted out, and the other two undergraduates also grew up. Three days were not enough to collect data. It was not easy to design a stable peripheral circuit for chips.

In his previous life, Liu Chen had a weak execution ability to form a team. Because he had no money, he completed the entire entrepreneurial project development work by himself. Therefore, he is a very rare talent who has a super high theory, knows how to program and is very good at low-level hardware development.

Lan Jun laughed, patted Liu Chen on the shoulder hard, and praised: "I knew you could do it, but there was nothing you didn't know. I knew it was right to find you."

Liu Chen glanced at me, and the hindshot was really loud.

...

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Chapter completed!