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Liu Meng jumped up excitedly, patted his head, and had a feeling of sudden enlightenment, music has a melody, in ancient times, staves were used to represent melody, and modern music mostly used rhythm and beat with fixed eight notes to express.

In other words, the melody of a song is constantly changing, then the digital signal distribution has non-uniformity, but this inhomogeneity is regular, then you can first analyze the digital signal of a song, record these parameters, and then process the digital signal of the song in segments according to these parameters.

The number of segmented compression is jù, and the number of segmented reduction is jù.

As soon as he thought of this method that might break through the existing compression reduction limit, Liu Meng was very excited, and immediately wrote a signal inhomogeneity analysis algorithm, as long as he found the rules according to the representation method of music, and set several inhomogeneous parameters one by one.

After segmentation, compression and restoration are carried out separately, and the number jù that needs to be recorded is the segmentation parameter and the compression number jù of each segment, because with the segmentation parameter, the minimum high-quality restoration number required for different segments is different, which can filter and discard a part of the number jù.

After this treatment, sure enough, the compression ratio can be increased to about 25, and the sound quality is higher than the previous 2o times the compression ratio, which means that the music player opened according to this method can be comparable to Apple.

After the algorithm was processed, Liu Meng did not hesitate, and in the dark room, he could not detect the change of time, so he tirelessly made the circuit board he needed, but fortunately, he did not need to pay attention to the size in the opening stage, Liu Meng simply drew a board.

In the real room, there is a machine for making circuit boards, and it is immediately made and soldered to the required controllers, memory chips, and other basic accessories. The communication connection and initialization between the controller and the memory are carried out, and then the algorithm program is solidified into the controller.

After being processed like this, it can be debugged on the actual hardware circuit, and Liu Meng has entered the state of madness again, tirelessly. After completing one process, immediately move on to the next process, and enter an audio for verification.

However, because the hardware circuit is too simple and the hardware filtering link is not designed at all, the actual hardware circuit cannot achieve the effect of simulating the algorithm in the computer, and Liu Meng had to sigh. In terms of algorithms, it is definitely comparable to Apple, but the design level of hardware circuits is not something that can be achieved in a short period of time, which requires continuous attempts and continuous improvements, and he does not have this time at all now.

Debugging hardware circuits. Need to find a power supply, Liu Meng is also a flash of inspiration, has been looking for the transformer winding material, can be removed from the computer's switching power supply, there are a lot of switching power supplies in the computer.

I just do it when I think about it, and I don't know how long it has been, and the time on the computer is not accurate. Liu Meng can only estimate that it was about 1o hours after Huang Sheng and the others went out, and the scar man brought him lunch at that time, and it was already cold, so the time was about 13-15 o'clock, and the time was about early in the morning.

I can't say that I can only gamble, I used my body to protect the computer case, and began to dismantle it very covertly, the power supply in the computer is actually spare, much larger than the required capacity, as long as the skill is removed. It will not affect the operation of the computer, and it will not be displayed by Huang Sheng and others.

Although it was late and they might have slept, Liu Meng was still very nervous, and his heart was pounding. If he makes a small move in private, the consequences are unimaginable, and he opens a miniature high-voltage pulse power supply device, and the hope of getting out of trouble is very slim.

This night, Liu Meng was destined not to sleep, but to use his knowledge and skills to save himself.

In addition to him, because there is at least one other person who can't sleep, Gu Pan.

After the waltz on the ice, the relationship between the two has undergone subtle changes, although no one wants to say anything, but they both know in their hearts that a kind of affection has been bred.

With the idea of revenge and continued to abuse Liu Meng, all day long, when Gu Pan was reading books and reviewing the final exam, he was almost thinking about the skating competition agreed with Liu Meng in the evening.

Dinner was finished at five o'clock, and she deliberately cleaned herself up in the bedroom, although she also knew that the light on the ice rink was very weak, and Liu Meng might not be able to see her clearly, but she still deliberately painted a light makeup.

Women are allowed to please themselves, and most girls are like this.

Of course, this was all secretly carried out by her behind Zheng Wen and Li Yue's back, halfway, Zheng Wen came back once, and the harmful Gu Pan quickly hid in the bathroom, Zheng Wen was very ghostly, and immediately saw Gu Pan's strange appearance, that is, he did not leave the bedroom.

Seeing that the time had reached half past six, and there was still half an hour before the agreed time, Gu Pan had to come out of the bathroom in a cover, Zheng Wen stared at her, hehehe, laughed a few times, and laughed so much that Gu Panyu panicked, and was about to leave the bedroom with a skate.

Zheng Wen chased and smiled: "Pan'er, don't you boast of your natural beauty and never wear makeup, which handsome guy are you going to meet, you actually pack yourself, I have to go with me to see, don't let any kid cheat." ”

Gu Pan's face immediately turned red, and with a straight face, he took out his cousin's pie and reprimanded: "You girl talks crazy all day long, I just went ice skating, worried about frostbite, and touched some antifreeze ointment." ”

"Oh, really, I haven't been skating in a few days anyway, so why don't we go together? Zheng Wen said narrowly, smiling like a little fox.

"No, I'll go to the library to borrow a book before I go skating, let's go first. Saying that, Gu Pan faced Zheng Wen for the first time and fled.

Zheng Wen giggled and made a victory gesture, it seemed that Liu Meng had finally opened his mind, and his cousin had also opened his mind, and couldn't help singing: "Today is a good day, a good day, everything you want can come true." ”

Gu Pan walked out of the door of the apartment, and felt that his face was hot and hot, and he was secretly annoyed that Zheng Wen was open-mouthed, but when he thought that he was about to abuse Liu Meng, he suddenly blossomed again.

When I waited on the ice rink for 7 o'clock, I still didn't see Liu Meng appear, Xiao Nizi was already a little angry, thinking secretly, what a big man. It turned out to be late.

Although she was displeased, Gu Pan was still waiting happily, and she also knew that Liu Meng didn't wear a mobile phone when she went to the ice rink, so she was waiting at the entrance of the ice rink, if Liu Meng came. She can definitely see that there is no situation where the two of them are staggered.

Unless Liu Meng arrived one step ahead of Gu Pan and went directly to the ice rink.

When he waited until half past seven, there was no one in sight, Gu Pan was a little upset, and looked around the ice rink a few times. I was worried that Liu Meng wouldn't be able to see her halfway, so I immediately returned to the entrance of the ice rink and waited, and then I was worried that Liu Meng entered the ice rink when she went to look for it on the ice rink, staggered, and went to the ice rink to look for a circle.

Such and such. It wasn't until nine o'clock in the evening that Gu Pan collapsed, feeling that Liu Meng really wouldn't come, and couldn't help but feel a sense of loss in his heart.

The mood of happiness and anticipation was completely destroyed, and I hated Liu Meng who had missed the appointment, thinking about how to punish him if Liu Meng appeared in a while.

Stay until ten o'clock. The ice rink was closed, and Gu Pan left the ice rink and returned to the dormitory.

Only Zheng Wen is in the dormitory, Li Yue has been studying with Jiang Weixin all night recently, but the two girls have question marks in their hearts, who knows if they are studying all night? Maybe the two of them are in a small hotel.

Since Li Yue's fake pregnancy incident last time, the range of topics that the girls talked about has widened a lot, some knowledge has increased a lot, and their tastes have become heavier, just kidding. There are also some children who are not suitable for children.

Once, Li Yue even showed the two Nizi the thing that could be blown into balloons, so that they could see each other for a long time, and the girls couldn't lose face with each other, so they could see it hard.

Gu Pan returned to the dormitory with a sullen face. It's almost the four big words "I'm not happy" written on his face, and he is like two people who are happy and shy when they go out.

Zheng Wen listened to the music, looked at the math textbook, and said casually: "What's the matter, with a straight face, I'm not happy about dating." ”

It's really a pot that can't be opened, Gu Pan held his breath all night, and sprinkled it directly at her, and said angrily: "Dating you a ghost, who said I went on a date, I just went ice skating." ”

Zheng Wen couldn't help but be surprised when she heard her tone, raised her eyes, and said suspiciously: "What's the matter, like taking a gun and medicine, Liu Meng did something that everyone is angry with to make you so angry, yes, I'll call and ask, and help you scold him by the way." ”

Gu Pan always wanted to call, but he felt that he had really gotten through, and he didn't know what to say, Zheng Wen said this, but he was taking advantage of her intentions, so he didn't defend or stop it, and he acquiesced in Zheng Wen's words.

Toot beet, the phone kept ringing, but no one answered, and it was the same for three calls in a row.

"Hey, where did this kid go, no one answered the phone. When Zheng Wen said this, Gu Pan was also shocked in his heart, and he had a bad premonition.

Zheng Wen dialed the boss's phone again, the boss answered almost in seconds, he was just the one who never left his hand, and he was chasing Zheng Wen again, so naturally he picked it up as quickly as possible, and Zheng Wen was startled.

"Hey, Xiaowen, I didn't expect it to be so late, you still called me. The boss was so excited that he could hear that there were other people next to him, laughing.

"Death side, who allowed you to call me that. Zheng Wen had a lot of opinions about the boss's inappropriateness, and scolded.

However, the boss is thick-skinned, and he has always insisted on calling it like this, scolding fiercely, avoiding it for two days, and continuing to do so after the limelight.

"Why is Liu Meng there? Why hasn't anyone answered the phone? After arguing with the boss for a while, I really ran out of energy, so I hurriedly asked.

"He's not in the dormitory, oh, the phone seems to be in bed, I heard a vibration just now. The boss said, and took out Liu Meng's mobile phone from the bed.

"Huh, it's so late, he hasn't come back yet, did you say where he went?"

"He doesn't seem to have been back since last night. The Boss replied.

"You are a dead man, your roommate has disappeared for so long, and you don't care, what if something happens?" Zheng Wen scolded.

"It's okay, this kid disappears every few days, we're all used to it, but this time the phones are all on the bed, it's really rare, it seems that I took a call last night and went out, and I never came back. The boss thought for a moment and said.

Gu Pan was also listening, remembering the joke Liu Meng made with her last night, and hurriedly exclaimed: "You won't be kidnapped by aliens." ”

She is also concerned about chaos, blurted out all of a sudden, and felt that she was too ridiculous after speaking, but she was full of worry, although Liu Meng was sometimes very bad and small-minded, but she was still very trustworthy, and the skating that she had made an appointment with disappeared without saying a word, and the mobile phone still fell on the bed.

ps: The girl is pregnant with spring, the woman is the one who pleases herself, Liu Meng will come back quickly and skate with Gu Pan.